120-4x^2=20

Simple and best practice solution for 120-4x^2=20 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 120-4x^2=20 equation: 


Simplifying
120 + -4x2 = 20

Solving
120 + -4x2 = 20

Solving for variable 'x'.

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

Add '-120' to each side of the equation.
120 + -120 + -4x2 = 20 + -120

Combine like terms: 120 + -120 = 0
0 + -4x2 = 20 + -120
-4x2 = 20 + -120

Combine like terms: 20 + -120 = -100
-4x2 = -100

Divide each side by '-4'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5}

See similar equations:

| 4x+16=72 | | (9x+32)+(11x+8)=180 | | 5(x-8)=-16 | | 5j-5u+4j-7u= | | 28-6(2m+4)=124 | | 6y=3x+7 | | 5x+100=7x+30 | | 15+3(2p-9)=60 | | 7(3+2b)=-21+8b | | (3y^2)-4y+3x=0 | | 7v+17-12=-38 | | 300000=750x | | -8x^2-24x=0 | | (3x^2)-4x+3y=0 | | 125=181-u | | -23+3a=4(2a+3) | | x/3=7-x/5=-10 | | Y=6(1)+2 | | x+57+49=180 | | 283=122-x | | Y=6(0)+2 | | 6v^2=-2v-1 | | 5/12x4/14 | | Y=6(-1)+2 | | 7(-5b-7)=11-5b | | 25t=57answer | | Y=6(-5)+2 | | 20+4x=2x+12 | | 25t=57 | | -4x^5(11x^3+2x^2+9x+1)= | | 73250=303x | | -36+6v=-6(4-3v) |

Equations solver categories