A motor boat whose speed is 18 km/h in still water takes 1 hour more to go 24 km upstream

explain componendo and dividendo....

If -4 is a root of the quadratic equation x^{2}+px-4=k and the quadratic equation x^{2}+px+k=0 has equal roots. Find the value of k

two water taps together can fill a tank in 9(3/8 ) hours . the tap of the larger diameter takes 10 hours less than smaller one to fill the tank seprately.find the time in which each tap can seprately fill the tank.

solve;

1/a+b+x=1/a+1/b+1/x

If the roots of the equation

(a-b)x^{2}+(b-c)x+(c-a)=0 are equal , prove that b+c=2a.

if the roots of this equation (a2 + b2)x2 - 2(ac +bd)x + (c2 + d2)=0

are equal prove that a/b =c/d

{plz note: i was trying to put 2 as square and it wasn't working,so all the twos exept the one in b are squares }

Plz help me solving this question

solve for x:-

a/(x-a) + b/(x-b) = 2c/(x-c)

At present Asha's age is 2 more than square of her daughter Nisha's age. When Nisha grows to her mother's present age, Asha's age would be one year less than 10 times the present age of Nisha. Find the present age of both Asha and Nisha.?

solve for x :root 3x^{2- }2 root 2x- 2 root 3=0

Find the positive value of k, for which the equation x^{2 }+ kx + 64 =0 and x^{2} - 8x + k=0 will both have real roots.

the speed of a boat in still water is 15 km / hr . it can go 30 km upstream and return downstream to the orginal point in 4 hours and 30 minutes . find the speed of the stream .

For what value of p the equation (1 + p) x^{2} + 2(1 + 2p) x + (1 + p) = 0 has coincident roots

Two Pipes running together can fill a cistern in 3 1/13 minutes.If one Pipe takes 3 miutes more than the other to fill it, find the time in which each pipe would fill the cistern.

Seven years ago Varun's age was five times the square of Swati's age. Three years hence Swati's age will be two fifth of Varun's age. Find their present ages.

4x^{2} + 4bx - (a^{2} - b^{2} ) = 0 please solve this equation................

use quadratic formula to solve :

x^{2}+2ax+(a_{2}-b^{2})=0

A motor boat whose speed is 18 km/h in still water takes 1 hour more to go 24 km upstream

explain componendo and dividendo....

If -4 is a root of the quadratic equation x

^{2}+px-4=k and the quadratic equation x^{2}+px+k=0 has equal roots. Find the value of ktwo water taps together can fill a tank in 9(3/8 ) hours . the tap of the larger diameter takes 10 hours less than smaller one to fill the tank seprately.find the time in which each tap can seprately fill the tank.

solve;

1/a+b+x=1/a+1/b+1/x

If the roots of the equation

(a-b)x

^{2}+(b-c)x+(c-a)=0 are equal , prove that b+c=2a.if the roots of this equation (a2 + b2)x2 - 2(ac +bd)x + (c2 + d2)=0

are equal prove that a/b =c/d

{plz note: i was trying to put 2 as square and it wasn't working,so all the twos exept the one in b are squares }

Plz help me solving this question

solve for x:-

a/(x-a) + b/(x-b) = 2c/(x-c)

Is there anything else in other chapters which is excluded from the current portions of CBSE syllabus Class 10

At present Asha's age is 2 more than square of her daughter Nisha's age. When Nisha grows to her mother's present age, Asha's age would be one year less than 10 times the present age of Nisha. Find the present age of both Asha and Nisha.?

solve for x :root 3x

^{2- }2 root 2x- 2 root 3=01. alpha+1, alpha+6

2. alpha+1, -(alpha+6)

3. -(alpha+1), alpha+6

4. -(alpha+1), -(alpha+6)

Find the positive value of k, for which the equation x

^{2 }+ kx + 64 =0 and x^{2}- 8x + k=0 will both have real roots.^{2}-12y^{2}, where x,y>0, what is the maximum possible value of p?(A) 1075.2

(B) 352.8

(C) 957.6

(D) 604.8

the speed of a boat in still water is 15 km / hr . it can go 30 km upstream and return downstream to the orginal point in 4 hours and 30 minutes . find the speed of the stream .

For what value of p the equation (1 + p) x

^{2}+ 2(1 + 2p) x + (1 + p) = 0 has coincident rootsTwo Pipes running together can fill a cistern in 3 1/13 minutes.If one Pipe takes 3 miutes more than the other to fill it, find the time in which each pipe would fill the cistern.

Seven years ago Varun's age was five times the square of Swati's age. Three years hence Swati's age will be two fifth of Varun's age. Find their present ages.

4x

^{2}+ 4bx - (a^{2}- b^{2}) = 0 please solve this equation................use quadratic formula to solve :

x

^{2}+2ax+(a_{2}-b^{2})=0