Question

If -1 is a zero polynomial $p(x) = ax^3 - x^2 + x + 4$, then find the value of 'a'
With Explanation

Answer 1

Answer:

a = 2

Step-by-step explanation:

p(x) = ax³ - x² + x + 4

Substituting (-1) at place of x,

p(-1) = a(-1)³ - (-1)² + (-1) + 4

=> -a - 1 - 1 + 4 = 0

=> -a + 2 = 0

=> a = 2

Answer 2

Step-by-step explanation:

Answer

to find the zeroes of the polynomial,

means to find those values of x

for which the value of equation is

zero

that is,P(x) =0.

then, P(x) =(x-6) (x-5) =0.

hence, x-6=0,x=6 Or x-5=0,x=5.

that is, the zeros are 6 and 5