Question

how do you factor 4x^-9x-9=0

Answer 1

Did you mean 4x^2 - 9x - 9 = 0

Answer 2

yes i do.

Answer 3

In general, find two numbers that multiply to get a*c and add to get b

In this case, Find two numbers that multiply to get 4*9 and add to get -9

Those two numbers are -12 and 3

Now split the middle term using those two numbers, then continue solving for x:

4x^2 - 12x + 3x -9 = 0
4x(x-3)+3(x-3) = 0
(x-3)(4x+3) = 0

x = 3, -3/4

Answer 4

omg thank you! you are a life saver hero. :)