If it's not what You are looking for type in the equation solver your own equation and let us solve it.
(2x+10)(x-5)=180
We move all terms to the left:
(2x+10)(x-5)-(180)=0
We multiply parentheses ..
(+2x^2-10x+10x-50)-180=0
We get rid of parentheses
2x^2-10x+10x-50-180=0
We add all the numbers together, and all the variables
2x^2-230=0
a = 2; b = 0; c = -230;
Δ = b2-4ac
Δ = 02-4·2·(-230)
Δ = 1840
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1840}=\sqrt{16*115}=\sqrt{16}*\sqrt{115}=4\sqrt{115}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-4\sqrt{115}}{2*2}=\frac{0-4\sqrt{115}}{4} =-\frac{4\sqrt{115}}{4} =-\sqrt{115} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+4\sqrt{115}}{2*2}=\frac{0+4\sqrt{115}}{4} =\frac{4\sqrt{115}}{4} =\sqrt{115} $
| x+6/3=16 | | (2x+10)(x-5)=90 | | 9+9=11x-2x+9 | | -4(5+n)=-16 | | -4(m-17)=-56 | | 5(x-3)-1=3(x+2) | | 1(3x+15)=4 | | 8(-1+n)=16 | | 3/2(2x+4)=9 | | 4q+6=q | | 5(x−3)−1=3(x+2) | | 10000000=10^x | | -36=2(v-8) | | 30=y/4+10 | | -9+9j=10j-1 | | 4(n-4)=-84 | | w-9=-11 | | 27y-3= | | -19+k=-36 | | 16m-24=8(2m-3) | | 4a+7=2a+7+a | | 7/p=26.88 | | x+2/9=-1 | | 40+(x+10)=180 | | 4(k+54)-54=2 | | -r+3=9+2r | | 6(2-4x)=11x-58 | | -8w=-6+8 | | f=(2862*1.8)+32 | | 3.5x-7=0.5(x-8) | | -1=n-7/4 | | 3(s+14)-15=84 |