Question

Explain how to factor the following trinominal forms: ax^2+bx+c when a = 1
ex. x^2-2x-80

Answer 1

you need 2 numbers a and b where ab = -80 and A + b = -2

the factor form will b (x +/- a)(x +/- b)

Answer 2

how did you find that out tho? can you show me step by step please?

Answer 3

sorry I have little time

i'll just say

that the 2 numbers are +10 and -8

giving (x + 10)(x - 8)

if you expand this it will come back to your trinomial

Answer 4

thanks!