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Nysa Singh
Subject: Maths
, asked on 21/2/18
Plz experts answer this question with proper steps
Q). If
${a}^{2}+{b}^{2}=41andab=20,$
then the positive value for the expression (a + b) will be ______.
Answer
2
Aryan Nikam
Subject: Maths
, asked on 21/2/18
Factorisaion
$12)2{a}^{2}-7a+16$
Answer
1
Dinky Tandon
Subject: Maths
, asked on 19/2/18
please answer it as fast as possible..
Q3. What is the simplified form of the expression
$\frac{mnxy-{n}^{2}{y}^{2}}{-nmxy+{m}^{2}{x}^{2}}+\frac{{m}^{2}{x}^{2}-{n}^{2}{y}^{2}}{nmxy}$
?
A.
$-\frac{mx}{ny}$
B.
$\frac{mx}{ny}$
C.
$\frac{mn}{xy}$
D.
$-\frac{xy}{mn}$
Answer
1
Dinky Tandon
Subject: Maths
, asked on 19/2/18
What will be the simplified form of the rational expression
$\frac{p\left(x\right)}{q\left(x\right)},\mathrm{where}p\left(x\right)=81{x}^{5}-81x\mathrm{and}q\left(x\right)=\left(9{x}^{2}+9\right)\left(3x+3\right)$
?
(A) 2
x
(
x
– 1) (2) 3
x
(
x
– 1) (3) 3(
x
– 1) (4) 3
x
(
x
+ 1)
Answer
1
Dinky Tandon
Subject: Maths
, asked on 18/2/18
The algebraic expression 5
x
^{4}
– 145
x
^{2}
+ 500 can be factorised as
(A)
$5\left(x-2\right)\left(x+2\right)\left({x}^{2}+25\right)$
(B)
$5\left({x}^{2}+16\right)\left(x-5\right)\left(x+5\right)$
(C)
$5\left(x-4\right)\left(x+4\right)\left(x-5\right)\left(x+5\right)$
(D)
$5\left(x-2\right)\left(x+2\right)\left(x-5\right)\left(x+5\right)$
Answer
1
Jitarth Vardhan Singh
Subject: Maths
, asked on 17/2/18
factorise 25 (a + b)^2 - 16 (a - b)^2.....plz solve
Answer
2
Jitarth Vardhan Singh
Subject: Maths
, asked on 17/2/18
factorise 25 (a + b)^2 - 16 (a - b)^2
Answer
2
Udit Ojha
Subject: Maths
, asked on 17/2/18
Factorise- x - y
Answer
1
Yash Drall
Subject: Maths
, asked on 14/2/18
tell me the answere
Q.(b). Factorize:
${p}^{4}-81$
Answer
1
Yash Drall
Subject: Maths
, asked on 14/2/18
tell me the answere
Q.22. Divide :
$\left(9x-6{x}^{2}+{x}^{3}-2\right)by\left(x-2\right)$
Answer
1
Yash Drall
Subject: Maths
, asked on 14/2/18
plzz tell me answere
Answer
1
Sambhav Aggarwal
Subject: Maths
, asked on 13/2/18
Solve this:
Q. The area of a circle is given by the expression
${\mathrm{\pi x}}^{2}+6\mathrm{\pi x}+9\mathrm{\pi}$
. Find the radius of the circle.
Answer
2
Srijitha Suresh
Subject: Maths
, asked on 3/2/18
Factorise: 16(x+y)^2 - 81(x-2y)^2
Answer
1
Aakriti Ghosh
Subject: Maths
, asked on 28/1/18
if a cm, b cm, c cm respectively are the length, breadth and height of a cuboidal box such that its total surface area is 288 cm^2 and volume is 288 cm^3, then what is the value of the expression 1/a + 1/b + 1/c?
Answer
1
Misha Shukla
Subject: Maths
, asked on 24/1/18
Sir pls explain me with steps all the tick mark sums
Q. Factorize each of the following quadratic polynomials by using the method of completing the square:
(1).
${p}^{2}+6p+8$
(2).
${q}^{2}-10q+21$
(3).
$4{y}^{2}+12y+5$
(4).
${p}^{2}+6p-16$
(5).
${x}^{2}+12x+20$
Answer
1
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Q). If ${a}^{2}+{b}^{2}=41andab=20,$ then the positive value for the expression (a + b) will be ______.

$12)2{a}^{2}-7a+16$

Q3. What is the simplified form of the expression $\frac{mnxy-{n}^{2}{y}^{2}}{-nmxy+{m}^{2}{x}^{2}}+\frac{{m}^{2}{x}^{2}-{n}^{2}{y}^{2}}{nmxy}$ ?

A. $-\frac{mx}{ny}$

B. $\frac{mx}{ny}$

C. $\frac{mn}{xy}$

D. $-\frac{xy}{mn}$

(A) 2

x(x– 1) (2) 3x(x– 1) (3) 3(x– 1) (4) 3x(x+ 1)x^{4}– 145x^{2}+ 500 can be factorised as(A) $5\left(x-2\right)\left(x+2\right)\left({x}^{2}+25\right)$

(B) $5\left({x}^{2}+16\right)\left(x-5\right)\left(x+5\right)$

(C) $5\left(x-4\right)\left(x+4\right)\left(x-5\right)\left(x+5\right)$

(D) $5\left(x-2\right)\left(x+2\right)\left(x-5\right)\left(x+5\right)$

Q.(b). Factorize: ${p}^{4}-81$

Q.22. Divide : $\left(9x-6{x}^{2}+{x}^{3}-2\right)by\left(x-2\right)$

Q. The area of a circle is given by the expression ${\mathrm{\pi x}}^{2}+6\mathrm{\pi x}+9\mathrm{\pi}$. Find the radius of the circle.

Q. Factorize each of the following quadratic polynomials by using the method of completing the square:

(1). ${p}^{2}+6p+8$

(2). ${q}^{2}-10q+21$

(3). $4{y}^{2}+12y+5$

(4). ${p}^{2}+6p-16$

(5). ${x}^{2}+12x+20$