If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
3x2 + -4 = x2 + 28
Reorder the terms:
-4 + 3x2 = x2 + 28
Reorder the terms:
-4 + 3x2 = 28 + x2
Solving
-4 + 3x2 = 28 + x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x2' to each side of the equation.
-4 + 3x2 + -1x2 = 28 + x2 + -1x2
Combine like terms: 3x2 + -1x2 = 2x2
-4 + 2x2 = 28 + x2 + -1x2
Combine like terms: x2 + -1x2 = 0
-4 + 2x2 = 28 + 0
-4 + 2x2 = 28
Add '4' to each side of the equation.
-4 + 4 + 2x2 = 28 + 4
Combine like terms: -4 + 4 = 0
0 + 2x2 = 28 + 4
2x2 = 28 + 4
Combine like terms: 28 + 4 = 32
2x2 = 32
Divide each side by '2'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
| P/7=68.k/42 | | y-2=1/2(x-3) | | 5x-4y=1g | | x+72+144=180 | | x-(x+5)=5 | | -9+4a+6=13 | | 3/1=x/-5 | | s^2+2=s | | -4(4b+16)+7(b+14)=b-13+b-8 | | 4x/5-7=-11 | | (1/3)y-3=(1/2) | | 4x-6-9=21 | | X-94-7200=0 | | -8x+6-2x=66 | | 6-(1/4)x=(9/2) | | -7(p-7)-8p=-5(p+7)+4p | | 32x^3-4x-1=0 | | 6-(1/4)=(9/2) | | D=3.14c | | X+50=3x+10 | | 8n=512 | | 3x+14=8x-76 | | 13y=5x | | x*y*(x-y)=2015 | | T(n)=8-7(n-1) | | 34y=16x | | -33+9x=-2(3x+9)+12x | | R(n)=14-3n | | exp(x)=x*x | | 7(7m+6)=-7(m-6) | | x*x=25-x | | 2sinx=3cos^2x+2sin^2x |