If it's not what You are looking for type in the equation solver your own equation and let us solve it.
18=2x*x
We move all terms to the left:
18-(2x*x)=0
We add all the numbers together, and all the variables
-(+2x*x)+18=0
We get rid of parentheses
-2x*x+18=0
Wy multiply elements
-2x^2+18=0
a = -2; b = 0; c = +18;
Δ = b2-4ac
Δ = 02-4·(-2)·18
Δ = 144
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{144}=12$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12}{2*-2}=\frac{-12}{-4} =+3 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12}{2*-2}=\frac{12}{-4} =-3 $
| 2/9t-5/7=1/12t | | 5a-7a+5=-3a+65-9a | | 3.8x=2.1x+10.2 | | 5(x+6)-22x=4(2x+10) | | -6w-10=-2(w-7) | | (3r-7)(5r+1)=0 | | 7+6s-3=7s+8-5s | | 6(x-8)=48 | | x2–10=3 | | 2(u-1)=7u-47 | | /x^2–10=3 | | 7-9a=-41-a | | 4(2x+1=5x+3x+9 | | (x+9)(4x+-1)=0 | | x+(1/3)=2(x-2/3)-6x | | X=3x+9=27 | | 3c+8=16 | | 6(2a+10)=5(a=5) | | y.2=y.3+2.6 | | √3c+8=4 | | 5+7(x-5)=8-8(x-8) | | 4/5x30=2/3(30+6) | | w•2w+6=228 | | 5(5x+9)=13-(×+7) | | 1/2(3x+2)-5/8=3/4x | | 2x+3x+4=5+5+x | | 4(3x+3)-2(7x-1)=-5 | | 45-(5+5y-3(y+2))=-2(5y-7)-(8(y-1)-12y+4) | | 1/2(3y=2)-5/8=3/4y | | 2/5x=-9x-7 | | -5x(x+1)+3x=6-(4x-3) | | 3x+5x-4-2=-10+6x |