If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
2*(30/2)*x*x = 56 // - 56
2*(30/2)*x*x-56 = 0
30*x^2 = 56 // : 30
x^2 = 28/15
x^2 = 28/15 // ^ 1/2
abs(x) = (28/15)^(1/2)
x = (28/15)^(1/2) or x = -(28/15)^(1/2)
x in { (28/15)^(1/2), -(28/15)^(1/2) }
| 2x+6y+2y-X=0 | | 9/7n-30 | | -6/5(1/10) | | F=9/7(n-30) | | 2x+6y+2y+X=0 | | 9/7(n-30) | | 234x/x | | 3(x-1)-4(x+6)=10(x+5) | | (5-i)(-11+i)=0 | | 14/7*3 | | 3/10*8 | | (2/x)3 | | 2(a-6)=4a(-2a+12) | | x+67+x=817 | | 0.30x=0.50x | | x-50+x=500 | | 32/22*352/1*3/4 | | 45/36*1078/1*28/55 | | 2(4+2r)=8+4r | | -3x-16=2x+7 | | exp(2x+1)-3=0 | | 156/1*25/2*5/6 | | 5t^3+8t^2+3=0 | | lnx+ln(2x)=0 | | 12/6-12/15 | | x+3+x=56 | | ln(x)+3=0 | | 779.95/5.5 | | -3n+3n=-9 | | 3p+2p=-7 | | 40/1*1/7*8/4 | | x+427=73 |