-2+x^2=7

Simple and best practice solution for -2+x^2=7 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -2+x^2=7 equation: 


Simplifying
-2 + x2 = 7

Solving
-2 + x2 = 7

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + x2 = 7 + 2

Combine like terms: -2 + 2 = 0
0 + x2 = 7 + 2
x2 = 7 + 2

Combine like terms: 7 + 2 = 9
x2 = 9

Simplifying
x2 = 9

Take the square root of each side:
x = {-3, 3}

See similar equations:

| -8x=4y-9 | | 9a+3b+c=10 | | 9x=10-4y | | 2+4-6*2+2*5+6=x | | 7+3(7a-35)= | | 5=4+a | | 2-x/4=4 | | 4a+2b+c= | | 4a+2b+c=5 | | (-4)+6+(-3)= | | 4b=12/7 | | ln(x+1)+ln(x+3)=0 | | 34a+17b+c= | | 7x+6=4x+4 | | 49x^2+140x-21= | | 0.6x-0.3(20+x)=0.45(20) | | 0.6-0.3(20+x)=0.45(20) | | 20x^3-32x^2-16x=0 | | 2(m+6)=20 | | Graphy=-4x+1 | | Graphy=-4+1 | | 3x^2y-9xy^2+15xy= | | 4x(5x^2-10x+2x-4)=0 | | 4+55x=33x+8 | | X/3(1/4)=25 | | (4x+5)+(6x)=20 | | 7a^2-42a-49=0 | | 49x^2-56x+7= | | X/3(1/2)=15 | | 8.44=173+20h | | 3x+4/3-4x/x-4=x | | 3m^2-27m+42=0 |

Equations solver categories