5x^2+7=7.8

Simple and best practice solution for 5x^2+7=7.8 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 5x^2+7=7.8 equation: 


Simplifying
5x2 + 7 = 7.8

Reorder the terms:
7 + 5x2 = 7.8

Solving
7 + 5x2 = 7.8

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 + 5x2 = 7.8 + -7

Combine like terms: 7 + -7 = 0
0 + 5x2 = 7.8 + -7
5x2 = 7.8 + -7

Combine like terms: 7.8 + -7 = 0.8
5x2 = 0.8

Divide each side by '5'.
x2 = 0.16

Simplifying
x2 = 0.16

Take the square root of each side:
x = {-0.4, 0.4}

See similar equations:

| 5a-2(4a+5)=7a | | 15y-6y^2=0 | | y-11=-16 | | 20-(8+x)=-(1-x)+29 | | X+(x-30)=190 | | t-1=-3 | | 5x+15=3x+19 | | 6y-9+10y= | | 27=3c-3(6-6c) | | -2(1-2k)-4=-10 | | 3705=y^2+436 | | 7=3c-3(6-2c) | | -6k=-42 | | -38-4= | | 3x-8=7x+5 | | 5-9=-17 | | -8(1+6n)=-8 | | 4x+3=9x+7 | | 99-2b=-1 | | 3x-2y=11 | | -6x-4x=20 | | 5(x-3)=-3x+41 | | -5x-3=-2x+8 | | 10=14+4x | | x+4=3x-2-6 | | 10+3(x-2)=31 | | 17.9-3h+9+4h=12.3 | | -3x+2x-6x=49 | | 12x^2+47x-42=0 | | 15x-3x=72 | | 12x+13x=50 | | -x+2x=8 |

Equations solver categories