If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(5x-10)(4x+11)=180
We move all terms to the left:
(5x-10)(4x+11)-(180)=0
We multiply parentheses ..
(+20x^2+55x-40x-110)-180=0
We get rid of parentheses
20x^2+55x-40x-110-180=0
We add all the numbers together, and all the variables
20x^2+15x-290=0
a = 20; b = 15; c = -290;
Δ = b2-4ac
Δ = 152-4·20·(-290)
Δ = 23425
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{23425}=\sqrt{25*937}=\sqrt{25}*\sqrt{937}=5\sqrt{937}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(15)-5\sqrt{937}}{2*20}=\frac{-15-5\sqrt{937}}{40} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(15)+5\sqrt{937}}{2*20}=\frac{-15+5\sqrt{937}}{40} $
| 46+8x=18 | | 8×+6y=54 | | 9x-42= | | 45=9(q−87) | | 8m-40=24m+40 | | 117=(2x)+(x+30) | | y+168=8 | | 4x+31=6 | | 43.22=1.94+24x | | 4(m+3)+2(m–3)=3(m–2) | | xxxx7=39 | | 43.22=1.94+x | | -8=2h-15 | | 90+1.2=58w-1.7 | | -(1/(x2)+1=0 | | 4x-8+7=35 | | 3x+4=1/234 | | 7x+2=012 | | 9x+x-4x= | | 4(2a-1)=-10a+50 | | 3y+9=y+17 | | -27x-3-27x-3-37x+2=360 | | 3x+4(x+5)=21 | | -5(2x+8)=8(2x-8)-10x | | .4(2a-1)=-10a+50 | | 71.90=4g+67.50 | | 5+20x=2x-13 | | 71=4g+67.50 | | -5a+3=19a-93 | | 8x+6x+7=2x-5x+3 | | −5(2x+8)=8(2x−8)−10x | | 100+676=c^2 |