5x^2-15=45

Simple and best practice solution for 5x^2-15=45 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^2-15=45 equation:


Simplifying
5x2 + -15 = 45

Reorder the terms:
-15 + 5x2 = 45

Solving
-15 + 5x2 = 45

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 5x2 = 45 + 15

Combine like terms: -15 + 15 = 0
0 + 5x2 = 45 + 15
5x2 = 45 + 15

Combine like terms: 45 + 15 = 60
5x2 = 60

Divide each side by '5'.
x2 = 12

Simplifying
x2 = 12

Take the square root of each side:
x = {-3.464101615, 3.464101615}

See similar equations:

| -x+2=-61+6x | | (2-5i)(p+q)i=29 | | 6x-64=4x-8 | | -3*f-14=1 | | -3(9-3x)=9 | | 6(3x-4)=-15 | | 2x+52=8x-26 | | -2(3-4x+1)=-156 | | 7n-3=38 | | 16x^2-7=18 | | -4x-21=19 | | -5(8+5x)=-190 | | -3y-12y=-4 | | x+(x*.0872)=1400 | | 7+6x=5x+7 | | x+(x+.0872)=1400 | | 2x^8+6x^5-36x^2=0 | | -4n^2+2n-2=0 | | 7x+3=-6x-10 | | -6=x^8+4 | | 3y(2y+1)=18 | | n-18.85=-5.85 | | 10x+9=229 | | 10.38+n=23.38 | | 6(1x-10)=12 | | -2k^2-4k-2=0 | | -18.85=-5.85 | | (3x+2)/4+(x+7)/3-(x+1)/2=0 | | -5(5x-6)=30 | | (-4+3)+1=-4+(3+1) | | (8-y)(5y+9)=0 | | -6x-1=-8+x |

Equations solver categories