Q 9 Find the value of a so that 1 - 7x is a factor of -14x3-47x2-14x+a - Maths - Factorisation

Question

Q 9 Find the value of a so that 1 - 7x is a factor of - 14
x 3 - 47 x 2 - 14 x + a

Ankita Agarwal · Accepted Answer

Dear Student,

9
 Let fx = -14x3-47x2-14x+aGiven: 1-7x is a factor of fx
 i e
, f17 = 0Substituting x=17in fx,-14173-47172-1417+a=0-249-4749-2+a=0-2-47-98+49a49=0-147+49a=0a=14749= 3

Regards

Q.9. Find the value of a so that 1 - 7x is a factor of - 14 x 3 - 47 x 2 - 14 x + a .

Q.9. Find the value of a so that 1 - 7x is a factor of $- 14 x^{3} - 47 x^{2} - 14 x + a$ .