If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(x-8)(2x+5)=2x*2-7x
We move all terms to the left:
(x-8)(2x+5)-(2x*2-7x)=0
We add all the numbers together, and all the variables
(x-8)(2x+5)-(-7x+2x*2)=0
We get rid of parentheses
(x-8)(2x+5)+7x-2x*2=0
We multiply parentheses ..
(+2x^2+5x-16x-40)+7x-2x*2=0
Wy multiply elements
(+2x^2+5x-16x-40)+7x-4x=0
We get rid of parentheses
2x^2+5x-16x+7x-4x-40=0
We add all the numbers together, and all the variables
2x^2-8x-40=0
a = 2; b = -8; c = -40;
Δ = b2-4ac
Δ = -82-4·2·(-40)
Δ = 384
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{384}=\sqrt{64*6}=\sqrt{64}*\sqrt{6}=8\sqrt{6}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-8)-8\sqrt{6}}{2*2}=\frac{8-8\sqrt{6}}{4} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-8)+8\sqrt{6}}{2*2}=\frac{8+8\sqrt{6}}{4} $
| 8x+7=7x-23 | | -6+4(-8x-2)=7 | | (8x-8)-2x=-(1-50) | | Q^2-29q-62=0 | | (8x-8)-2x=-1-50 | | 8x-8-2x=-1-50 | | 5(n-6)+8=4+5(1+n) | | m/5.2+3.2=4.3 | | 2p^2-3p-9=0 | | -5(-3x+6)=7 | | 17x^2+32x+15=0 | | 5y-34=-2(-7y+1) | | -48=7a-35 | | Q=42-0.7t | | 4(-6x+4)-4x=2 | | 32121312312312312313x+9832749294729873748372923=099999999999999999999999999999999999998428648273682568746826428764283764 | | 699x+087x+21+2=55 | | 5x^2+52=4x^2 | | 6x+7(x+6)=-23 | | 20=10x−6(2x+5) | | x(3x+4)=-(9+2x) | | 20=10x−6(2x+5)20=10x−6(2x+5) | | 4(5+7p)=-16-8p | | 35=(a-1) | | 4(4x+1)=2 | | 239=5-v | | 4(k-1)=17+7k | | 12.44=2g+3.98 | | (x+5)+(2x+7)+(4x+1)=180 | | -108=-4(3+3n) | | 4(2x+8)=11x+5-3x+27 | | Y+4x=22 |