If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
x2 + 7 + 2x2 + 4 = 86
Reorder the terms:
7 + 4 + x2 + 2x2 = 86
Combine like terms: 7 + 4 = 11
11 + x2 + 2x2 = 86
Combine like terms: x2 + 2x2 = 3x2
11 + 3x2 = 86
Solving
11 + 3x2 = 86
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-11' to each side of the equation.
11 + -11 + 3x2 = 86 + -11
Combine like terms: 11 + -11 = 0
0 + 3x2 = 86 + -11
3x2 = 86 + -11
Combine like terms: 86 + -11 = 75
3x2 = 75
Divide each side by '3'.
x2 = 25
Simplifying
x2 = 25
Take the square root of each side:
x = {-5, 5}
| q=0.5kl | | 5x^2-170x+1445=0 | | 45=6(a-8)+3(6-7a) | | 20x+50y=900 | | h-6=-8.4 | | x^2-34x+154=0 | | -2(5x)=5(x+7) | | 8x+5x-21=63-8x | | b+0.62b=2.48 | | 1/√(sec^2X-1) | | 55-3x-2x+1= | | 39.96+0.50x=c | | c=39.96+0.50x | | 500=x+3 | | tan(2x)=2sin(2x) | | 15=-3y-4x | | 4x=1/21 | | 4(-x+1)=-2(x+2) | | 3cos(2x+1)-2=0 | | x^3-6x^2+5x+4=0 | | 4x^2+12=6x | | 2y+y-2y=20 | | (10x-18)÷2/5 | | x^3-2x^2-x+38=0 | | Y-(2y+3)=-20 | | 4(10x-7)=-20 | | 5x-2(x+1)=52 | | logbase(x+7)*(36x+9)=2 | | -5.8p=5.1 | | 3-(2W+1)=-40 | | 10x-9y=-8 | | -16+n=-2-8n+7n |