Question

Factor ._.

Answer 1

Factor what

Answer 2

Oh geez 4a62 - 8a - 5

Answer 3

What

Answer 4

Oh

Answer 5

No i mean 4a^2 - 8a - 5 and my ansswer was

Answer 6

X factor

Answer 7

great show i like it

Answer 8

Multiply the coefficient of X^2 by the last term

Answer 9

(2a+1) (2a−5)was my asnwer

ac?

Answer 10

Do you know the ac method of factoring?

Answer 11

No i think i don't /:

Answer 12

To factor a polynomial of the form

\(ax^2 + bx + c \)

1. multiply ac together.
2. find two numbers whose product is ac and whose sum is b.
3. break up term bx into two terms using the numbers from step 2.
4. factor by grouping

Answer 13

That is the method.
Now I will do each step of the method for your problem.

Answer 14

4x^2 -2x + 10x -5 like this

Answer 15

Factor: 4a^2 - 8a - 5

Answer 16

BTW, the first rule of factoring is to always try to factor out a common factor out of all terms.
In your case, there is no common factor, so we move on to the ac method.

Answer 17

ac = 4(-5) = -20

-10 + 2 = -8; -10(2) = -20
The numbers -10 and 2 work.

= 4a^2 - 10a + 2a - 5
= 2a(2a - 5) + 1(2a - 5)
=(2a - 5)(2a + 1)

Answer 18

So that would look like this 4a(a−2)

Answer 19

Oho okay