4x^2-20=5

Simple and best practice solution for 4x^2-20=5 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^2-20=5 equation: 


Simplifying
4x2 + -20 = 5

Reorder the terms:
-20 + 4x2 = 5

Solving
-20 + 4x2 = 5

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 4x2 = 5 + 20

Combine like terms: -20 + 20 = 0
0 + 4x2 = 5 + 20
4x2 = 5 + 20

Combine like terms: 5 + 20 = 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:

| =2x^2-5x+2 | | 5x+6y=17 | | 10+3(x-13)=-5(1-x)+14 | | 2+4=3x | | x^2-25=9 | | 2(x+4)-1=13 | | (5w-3)(6w+5)= | | 2x+12=133-12 | | 2x+12=133x-12 | | 2=21-n | | 2x+12=133x-(-11) | | -2-4y=2 | | 8(8y-2)-(6y+5)= | | 6-4y=2 | | 2-4y=2 | | x+(x-1)=3x | | 60=-6v | | 3x^2+12x=9 | | =(-5x)2 | | s/4=6 | | (4*3-5)*3-20=o | | 6n^2-5n^2+7n^2= | | x-(-5)=12 | | 0.65xb=39 | | x^2+7x+5x-31-30=0 | | d-6=-8 | | 0.80xb=16.00 | | -12=z/3 | | 4x+7=2x+3 | | 12=-7+y | | 5x=21+4 | | 12=r+6 |

Equations solver categories