If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
5x2 + -66 = 0
Reorder the terms:
-66 + 5x2 = 0
Solving
-66 + 5x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '66' to each side of the equation.
-66 + 66 + 5x2 = 0 + 66
Combine like terms: -66 + 66 = 0
0 + 5x2 = 0 + 66
5x2 = 0 + 66
Combine like terms: 0 + 66 = 66
5x2 = 66
Divide each side by '5'.
x2 = 13.2
Simplifying
x2 = 13.2
Take the square root of each side:
x = {-3.633180425, 3.633180425}
| X=(10x-18) | | x/87=12 | | v-7.3=5.88 | | 9(x+7)=-7 | | 12x+6=30x-30 | | (-7/18x)=(28/18) | | y=4x-8x | | 13x-8=12x+4 | | 10(x+10)=-1 | | 025(3-x)=0.375 | | 13x+7=80 | | 4x-5=7(2x+1) | | 0.5x^2-3x=5 | | 10x-2(1x+4)=8(1x-2)+6 | | 0.4(8x+32)=3.29(x+4) | | .25x-.6=.41 | | 0.2(9x+45)=1.8(x+5) | | 6-7b+b=-7b+3 | | (2)(4)-(6-4)/-3 | | 6(x-8)=4x-36 | | r/-6-5=28 | | 2.5x+5=180 | | 13+4x=25+12x | | 2y+6x-4=2y-8 | | 10x+25=75 | | 24rt^2/-8t | | -8=2x+35 | | -8(x+12)=24 | | 1/4x-2/3=5/12 | | x^2=(16)(12) | | 6=0(0+b) | | -3v=-4-5v |