Question

a^2-16a-80


pls answer this question ​

Answer 1

Heya!!

Question:

p(x)=a²–16a–80=0(let, if a is a zero)

ANSWER:

Factors of 80= 2×2×2×2×5

Thus,

=>a²–20a+4a–80=0 (By factorisation)

=>a(a–20)+4(a–20)=0

=>(a+4)(a-20)=0

Thus, either;

(a+4)=0 OR (a–20)=0

Therefore,

a= –4 OR a=20

i hope it helps you ^_^