If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
3(x2 + -8) = 84
Reorder the terms:
3(-8 + x2) = 84
(-8 * 3 + x2 * 3) = 84
(-24 + 3x2) = 84
Solving
-24 + 3x2 = 84
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '24' to each side of the equation.
-24 + 24 + 3x2 = 84 + 24
Combine like terms: -24 + 24 = 0
0 + 3x2 = 84 + 24
3x2 = 84 + 24
Combine like terms: 84 + 24 = 108
3x2 = 108
Divide each side by '3'.
x2 = 36
Simplifying
x2 = 36
Take the square root of each side:
x = {-6, 6}
| 20+6x=42+1x | | 3(x-4)=x+x+2 | | 4g*-5g=0 | | 4-6y+3=4y+15-6y | | f(x)=x^3-4x^2+4x+5 | | 4y/4=10 | | ((3x-2)/5)-((4x)/6)=-1 | | 7x-10=x^2 | | (c+2)(c+2)=9 | | 9=5u+27+4u | | 30-5x=5-10x | | -4r-28=-78-r | | 5x-2=6x-2x | | t*t-2t=0 | | 2t+2-5t=11 | | -1=3ln(x) | | t*t-t=0 | | 30169=42854-42854x^4 | | ln(x)-4ln(x^2)=-1 | | 2y-(2/z)=x | | -6(2t+2)=-36 | | 4w-8w-15=-63 | | 60=50.45x | | 5/7x9 | | 5(f-9)=-70 | | -8x+22=-5x-65 | | 2y-(2/z)=c | | -10(s+3)=-28 | | 4m^2+1-5m=0 | | a*a+3a=0 | | 4x^2y+20xy^2-8xy=0 | | 3sin(x)=8*e^7x |