Question

if 2 is the polynomial p(x)= 4x^2+2x-5a one is zero then the find value of a

Answer 1

Answer:

The value of a is 4.

Explanation:

A Zero of a polynomial in x is a numerical value which, when using it in place of x and makes the polynomial equals to 0.

Given the polynomial:

$p(x)=4x^2+2x-5a$

2 is the zero of the polynomial then,

$p(2)=4(2)^2+2(2)-5a =0$

⇒$4 \cdot 4 +2\cdot 2-5a=0$ or

16+4-5a=0

20 -5a =0 or

5a =20

Divide by 5 to both sides of an equation;

$\frac{5a}{5} =\frac{20}{5}$

simplify;

a =4

Therefore, the value of a is 4.

Answer 2

Answer:

the answer is 4

Step-by-step explanation:

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