Question

Quadratic Factoring! 7x^2 + 40x - 25 = 0

Answer 1

and 35x^2 - 69x + 28 =0

Answer 2

first one does not factor using integers.
use the quadratic formula to solve

Answer 3

@satellite73 I'm not allowed to,our teacher wants us to turn it into something like (x+6)(7x+4)

Answer 4

well you can't
maybe there is a typo

Answer 5

make sure the problem is exactly \[7x^2+40x-25=0\] if it is you can use the quadratic formula to find the zeros, but you will not be able to factor until you have them, because they are irrationals numbers

Answer 6

Well what about this: 7x^2 + 32 = 7 - 40x

and

42x^2 - 69x + 20 = 7x^2 - 8

Those are the very raw original problems beforeI put them over to one side to equal zero like my teacher wants us to do.

Answer 7

\[7x^2 + 32 = 7 - 40x \iff7x^2+40x+25=0\]

Answer 8

add \(40x\) subtract \(7\) now you can factor

Answer 9

try \[(7x+5)(x+5)=0\]

Answer 10

@satellite73 Ok :) I think that will work. Thank you!

Answer 11

yw