If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(6x-6)(7x+1)+55=180
We move all terms to the left:
(6x-6)(7x+1)+55-(180)=0
We add all the numbers together, and all the variables
(6x-6)(7x+1)-125=0
We multiply parentheses ..
(+42x^2+6x-42x-6)-125=0
We get rid of parentheses
42x^2+6x-42x-6-125=0
We add all the numbers together, and all the variables
42x^2-36x-131=0
a = 42; b = -36; c = -131;
Δ = b2-4ac
Δ = -362-4·42·(-131)
Δ = 23304
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{23304}=\sqrt{4*5826}=\sqrt{4}*\sqrt{5826}=2\sqrt{5826}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-36)-2\sqrt{5826}}{2*42}=\frac{36-2\sqrt{5826}}{84} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-36)+2\sqrt{5826}}{2*42}=\frac{36+2\sqrt{5826}}{84} $
| n÷4=13.53 | | (10+x)×2=4 | | (6+x)÷3=-10 | | 0.01^x=0.99 | | -2c=-20 | | x²+8x+18=24 | | x²+8x+64=12 | | x=7x-29 | | x=(−70+17x)√ | | Y=x^2+6x-71 | | 16x+13+19x-8=360 | | x-(-20)=32 | | 3m²-13m-10=0 | | v²+8v+12=0 | | 6q²-3q=5q²-8q+14 | | 4a+6=4 | | (170/90)^1/10-1=r | | x^2-22x+120.5=0 | | 6(x-7)=6x-42(7)= | | -9=-23+7x^2 | | 8y+5-4y+1=36 | | 3x-2(x-1)=x+5 | | 30=5x∴x= | | -7x-2=5x+10 | | 10k+5+0=-2k+-3k+80 | | Y=15-14x | | (x+4)3=6 | | -5z=-3 | | 9z=180;z=20 | | 2y/9=3 | | 4x-8=2(x-1) | | 3y/4-5=11 |