Question

Factor check by expanding; 5a^2-7a-6 help on how to GET to my answer?

Answer 1

\[(a-2) (5 a+3)\]

Answer 2

how did you arrive at that

Answer 3

we want two numbers, such that if we multiply them we get -30. and if we add them we get -7.

So those two numbers are:
-10 and +3.

Answer 4

Now, solving further:

5a^2-7a-6

5a^2 -10a + 3a - 6

taking commons,

\[5a(a-2) + 3(a-2)\]
Further commons,
(5a + 3)(a-2)

Answer 5

thank you:)

Answer 6

Uw. :)