SOLUTION: hi i really need someone to solve it fast (2x-1)^2 - (x-4)^2 + 12x - 60 = 0 i know the answer is x = 5/-5 but i need to know how . thanks !!!

Question 586833: hi i really need someone to solve it fast (2x-1)^2 - (x-4)^2 + 12x - 60 = 0
i know the answer is x = 5/-5 but i need to know how .
thanks !!!
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
working the first two terms as the difference of squares

(3x - 5)(x + 3) + 12x - 60 = 0 ___ 3x^2 + 4x - 15 + 12x - 60 = 0 ___ 3x^2 + 16x - 75 = 0

factoring ___ (3x + 25)(x - 3) = 0

the answer that you know, is not correct

you can plug x=5/-5 into the original equation, and see that it does not work
RELATED QUESTIONS
need to solve for an "X" exponent: 2 (x power) = 1/4 I know the answer but dont... (answered by ikdeep)

Hi ! Here is the problem : Find all the values of the integer x so that : {{{... (answered by rothauserc)

Solve the equation: 1n x = 1n 2 + 1n (3x - 1) I know the answer is 2/5 from the answers... (answered by bucky)

I need help. It's been a while and I need to be refreshed. I know the answer is 5x + 3... (answered by tutorcecilia)

I need help for th is expression. 20(3)squared-14(3)+2 Squared=2 X=3 The answer (answered by stanbon,MathLover1)

(x+5)/2+(2x-1)/5=5 I know the answer I just don't know how to get to... (answered by algebrahouse.com)

i need to know how to solve -x+5 is the part above 6 and then it says =1/2 (answered by solver91311)

SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD PROBLEM: x-3y= 3 2x-5y= 4 (answered by stanbon)

hi i really need help with negative exponents. i already did this problem but the answer (answered by ankor@dixie-net.com)