If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(2x+30)(2x+20)-600=336
We move all terms to the left:
(2x+30)(2x+20)-600-(336)=0
We add all the numbers together, and all the variables
(2x+30)(2x+20)-936=0
We multiply parentheses ..
(+4x^2+40x+60x+600)-936=0
We get rid of parentheses
4x^2+40x+60x+600-936=0
We add all the numbers together, and all the variables
4x^2+100x-336=0
a = 4; b = 100; c = -336;
Δ = b2-4ac
Δ = 1002-4·4·(-336)
Δ = 15376
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{15376}=124$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(100)-124}{2*4}=\frac{-224}{8} =-28 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(100)+124}{2*4}=\frac{24}{8} =3 $
| 20h+40=-15-80 | | x+5/14=9/7+x-8/3 | | 4(4x)^2−4=0 | | 5=10-8/3y | | X/5+3x=119 | | -4(5x+1)=12(20x+16)+16 | | -4x+29x=2(x-17) | | 122=14x-4 | | -3(x-5)-(2x+4)=3x-8x | | m6=4+5m=-29 | | 25p+9=16 | | .9x-1.6=4x+14 | | 10+6.7n=8+7.1n | | 7x+10=4x-6 | | 8=-8(a+7) | | -5(2+r)=15 | | -57=-1-8v | | 10d-8d=8 | | 88=-7d-d | | 2=x+10/5 | | 2y+36=2y | | 2=4+x/9 | | 15r+22=-7r+18 | | -2+10x=-132 | | 0.2^x=0.18 | | 40=-10(t+3) | | 8(v-2)=5(v+3)+3 | | -3x+5=3(x+5) | | 14=6a-16 | | 7=n/2+2 | | -3y−12=9 | | -9+4m=-65 |