Question

Factor completely:

3x^2-7-4x

Answer 1

You'd probably find this factoring easier if you'd please rearrange the terms in descending order by power of x:
\[3x^2-4x-7\] Next, multiply the first coefficient (3) by the last coefficient (-7), to obtain -21. List possible factors of -21, such as -3 and 7, 21 and 1, and so on. Look for the pair of factors that add up to the coefficient (-4) of your middle term.

Answer 2

The way I typed them is how it is typed on my homeworksheet

Answer 3

I'm sure it is. But I'm explaining what you could do towards solving this problem. If you'd rearrange the terms so that they are in descending order by power of x, the factoring will become easier.

Answer 4

okay I see what you mean... sorry!

Answer 5

Thank you

Answer 6

Take the first coefficient and the last one, and multiply them together. What do you get?

Answer 7

21, I think i can get it from here thank you!

Answer 8

Good. Actually, that'd be -21, not 21.

Best wishes to you.