If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
2x2 + -7 = 83
Reorder the terms:
-7 + 2x2 = 83
Solving
-7 + 2x2 = 83
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 2x2 = 83 + 7
Combine like terms: -7 + 7 = 0
0 + 2x2 = 83 + 7
2x2 = 83 + 7
Combine like terms: 83 + 7 = 90
2x2 = 90
Divide each side by '2'.
x2 = 45
Simplifying
x2 = 45
Take the square root of each side:
x = {-6.708203933, 6.708203933}
| 6x^2-5=19 | | a/5+7=22 | | 16x^2+4=8 | | 6(m-2)-10=14 | | 4x^2+11=155 | | 5x^2-23=-18 | | 7x^2-5=-35 | | 1/3x^2-4=23 | | 2x^2+13=27 | | 9x+9.16=3x+19 | | 3x^2+5=137 | | 20v-45-2v=6v-48-1 | | (2.0*10^7)/(5.0*10^8) | | 6x^2+24=120 | | 18x^5+6x/2x | | 3x^2+8=92 | | 2n=26 | | 4(x+8)-12=86 | | 5/x-2+3/x+2=x/x^2-4 | | (1+-1x)(7+-2x)=0 | | 9x^2-2=14 | | 7x^2-1=20 | | -4(x+1)=5x-8+3(3x+4) | | 0.5=x/30*100 | | 0.9n+3=0.4n+1.5 | | 9x^3+30x^2=24x | | 9t^2-t+1/2/2t^2+t-4 | | 7x+3=2(5x-15) | | -4(v+2)=5v+37 | | (-3v^3/w)^2 | | 25x^2+1=17 | | 7x+20y=48 |