If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(5x+4)(8x-71)=100
We move all terms to the left:
(5x+4)(8x-71)-(100)=0
We multiply parentheses ..
(+40x^2-355x+32x-284)-100=0
We get rid of parentheses
40x^2-355x+32x-284-100=0
We add all the numbers together, and all the variables
40x^2-323x-384=0
a = 40; b = -323; c = -384;
Δ = b2-4ac
Δ = -3232-4·40·(-384)
Δ = 165769
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-323)-\sqrt{165769}}{2*40}=\frac{323-\sqrt{165769}}{80} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-323)+\sqrt{165769}}{2*40}=\frac{323+\sqrt{165769}}{80} $
| 500+10x=1000-15x | | 500+15x=1000-10x | | 500+10x=1000-10x | | 52+8p=6(p-4) | | 5z=–9+6z | | 8=u/12.6 | | 4x=237-3 | | 69+20x=300+20x | | 3/2x-2=-17/10 | | 90+80x=20+90x | | 5-(x-4)=12 | | 6x4+x=2x3x+4 | | 69+30x=300+30x | | 1;4(x-2)+4=12 | | 0.03(4t+8)=0.12(t-3)+0.60 | | 2x=24+1x | | a2=62 | | -2x(3x+1)(x-8)(x/2)=0 | | 3x+90=240 | | 2(x+4)+2=14 | | -0.0006x^2+0.02x+20=0 | | 37x+3+23x-3=180 | | 8(w+10)=88 | | -14=-9p+15+10p | | 2q+6=12(q=-2) | | -14=-9p+15 | | 27x-1+32x+4=90 | | 9(y-87)=72 | | 56=8−6x | | y=2.50(15) | | 0=3x-3x^2-250 | | x+65+x+135=180 |