4x^2-7=18

Simple and best practice solution for 4x^2-7=18 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 4x^2-7=18 equation: 


Simplifying
4x2 + -7 = 18

Reorder the terms:
-7 + 4x2 = 18

Solving
-7 + 4x2 = 18

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 + 4x2 = 18 + 7

Combine like terms: -7 + 7 = 0
0 + 4x2 = 18 + 7
4x2 = 18 + 7

Combine like terms: 18 + 7 = 25
4x2 = 25

Divide each side by '4'.
x2 = 6.25

Simplifying
x2 = 6.25

Take the square root of each side:
x = {-2.5, 2.5}

See similar equations:

| 2(x-5)=1x | | -9x=64 | | 7q^2-3q+2=0 | | 4x^2y-7xy^2=0 | | 3x^2+12x+36=42 | | 9x=64 | | 3y-2(y+4)=-2 | | X+2=-8 | | -4(-2y+3)=20 | | 8x^3-8x-16x=0 | | 6y^2-9y+18=0 | | 1-6n+3=46 | | 2(-x+5)=2(1-x)-8 | | 16x+2y=6 | | z^2-15z+12= | | -8-t=-25 | | 8z-5=75 | | x+2x^2=6 | | 2[w-(2*w+4)+3]=2(w+1) | | 18=3(y+9) | | -[4x-(2x+2)]=-5-[3(2x-4)-2x] | | 3a^2*6a=0 | | 2a+7=37 | | 3a=0 | | -3x+8=8 | | 0.4b+9.2=10 | | 18-2x^2=0 | | -10=-14v+16v | | 3x+5y=200 | | x+5=3x-10 | | -1+3x=-1 | | 2*2*3*x*y*y*y=0 |

Equations solver categories