If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(2x+6)(2x+6)-74=0
We multiply parentheses ..
(+4x^2+12x+12x+36)-74=0
We get rid of parentheses
4x^2+12x+12x+36-74=0
We add all the numbers together, and all the variables
4x^2+24x-38=0
a = 4; b = 24; c = -38;
Δ = b2-4ac
Δ = 242-4·4·(-38)
Δ = 1184
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1184}=\sqrt{16*74}=\sqrt{16}*\sqrt{74}=4\sqrt{74}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(24)-4\sqrt{74}}{2*4}=\frac{-24-4\sqrt{74}}{8} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(24)+4\sqrt{74}}{2*4}=\frac{-24+4\sqrt{74}}{8} $
| X^+11x+30=0 | | X÷2-x÷3=1 | | C^2+11x+30=0 | | X-x=35 | | 2e^2-8e=0 | | 2x^2-8x+15=7.5 | | 160/a=0.1 | | 34+5(n+1)=4 | | 3672/(9x-6)=36 | | (1/6)x+4=(1/3)(x-3)-1.5x | | (x+3)^2-7(x+3)=0 | | 20=2-6n | | x+1/2x-7=2x-7/x+1 | | X^2-9+4x=0 | | 4.5x-11.25x^2=0 | | (-8m)-2=-10 | | 5x=1/128 | | (D^2+3D+2)y=0 | | -3/2=8/27=x | | 0=x^2-15x-25 | | 16a+14a-3=38 | | 9a3=9 | | 4x(x+6)=38 | | -7t^2+t-2=0 | | (x-3)^2=13 | | 6+a/2=a+4 | | (7x+1)^2=36 | | 6x^2+3x-13=0 | | x/2-5=(x-2)^2-9 | | 2^x+4^x=2 | | 5/(x+2)=0 | | 26x+10=0 |