If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2-7=57
We move all terms to the left:
x2-7-(57)=0
We add all the numbers together, and all the variables
x^2-64=0
a = 1; b = 0; c = -64;
Δ = b2-4ac
Δ = 02-4·1·(-64)
Δ = 256
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{256}=16x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-16}{2*1}=\frac{-16}{2} =-8x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+16}{2*1}=\frac{16}{2} =8
| 4.9t^2=3t | | 7×-3(4-2x)=12 | | -6p-27=5(2p+1) | | 1/3(9n+12)=19 | | 0=-4.9t^2+3t | | 1/9p-5/18=-1/6p+1/3 | | 120+0.20x=30+0.50x | | 17=2L+2W,l*W=15 | | 30+3x=2(1+5x) | | 3n+42=3∙5+7∙6 | | -8/9(3t+5)=2/3-12 | | (7x+3)/(5x-4)=3/2 | | 154=6x-2(-3x-5) | | 5y+3/7=3/7 | | 5*x+24=5(x-1.5) | | (w^2/8)-(w/2)-4=0 | | N=1.76t^2-13.32t+41 | | 5*x+24=5(x-1/2) | | 4x^2+56x/3-80=0 | | 84+76+77+75+2x/6=80 | | 25/6=-x+1/2-8/3x | | 4x^2+56/3*x-80=0 | | x+2/3=13/9;{5/9,2/3,7/9} | | +2y-8=3(y-11) | | 200=1.5x | | X+2x+1+2x+3=29 | | (m-2)=-2(-2m+6) | | (3+4x)=16 | | x/2+x=3 | | (m-2)=-2(-2m+6 | | 3(x5)=2(x+5) | | X2+4x=20 |