Question

factor: 10x^2 + x -21

Answer 1

-21 * 10 = -210

Answer 2

Find two numbers that add up to 1 and their product is -210.

Answer 3

that is not factoring,,,

Answer 4

Yes, it is. We are trying to split the middle term.

Answer 5

i have so far: (2x + 3) (5x-7) but i don't get why the outer numbers do not add up to the x.

Answer 6

That's the correct factorization!

Answer 7

so why do the outer numbers not add up the the x?

Answer 8

They add up to the coefficient of \(x\) if and ONLY if you have the factorization in the form\[(x + \cdots)(x + \cdots)\]

Answer 9

ohhhhhhhhhhhhhhhhhhhhhh ty

Answer 10

You're welcome ;)