If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x(x+17)=81
We move all terms to the left:
2x(x+17)-(81)=0
We multiply parentheses
2x^2+34x-81=0
a = 2; b = 34; c = -81;
Δ = b2-4ac
Δ = 342-4·2·(-81)
Δ = 1804
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{1804}=\sqrt{4*451}=\sqrt{4}*\sqrt{451}=2\sqrt{451}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(34)-2\sqrt{451}}{2*2}=\frac{-34-2\sqrt{451}}{4} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(34)+2\sqrt{451}}{2*2}=\frac{-34+2\sqrt{451}}{4} $
| y(y+4)=-8 | | -7x-(-5-x=-9(2x-1)-1 | | 250+3.50x=300+2.25x | | −x3+21=0-x3+21=0 | | 156=3x+36 | | 250+3.50x=300+225x | | 4x=+5 | | 7x–5=23 | | R(x)=42,000x-6x^2 | | 6(3n+1)-3(-1+2n)=n=2n | | 8(y+6)-3(y-4)=2(y-5) | | (6x+4)+(4x+8)=52 | | -p/3=−5 | | −4(2x+6)=16 | | 9=5y+3/2 | | 61-x/4=12 | | 1/2(4x+8)-2x=-0.4 | | 3y2+6=15 | | 45+25/6x=2x+50 | | (x-3/3)+(x+8/5)=30 | | 6+4j=3j | | -7x+3=-7x-3 | | 9x+7=27 | | x10+5=− | | 24+0.10x=45.50 | | -7+3=-7x-3 | | -7.5x=10 | | 95-15x=-4+18x | | B+30=12b-25 | | 4.905x^2-11x+2.5=0 | | -30=k(-3) | | F=300+500x^-1 |