=5x^2-9

Simple and best practice solution for =5x^2-9 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^2-9 equation:


Simplifying
0 = 5x2 + -9

Reorder the terms:
0 = -9 + 5x2

Solving
0 = -9 + 5x2

Solving for variable 'x'.

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

Add '-5x2' to each side of the equation.
0 + -5x2 = -9 + 5x2 + -5x2
Remove the zero:
-5x2 = -9 + 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-5x2 = -9 + 0
-5x2 = -9

Divide each side by '-5'.
x2 = 1.8

Simplifying
x2 = 1.8

Take the square root of each side:
x = {-1.341640787, 1.341640787}

See similar equations:

| x^2+16x+19= | | [3x]+2=1 | | 2c^2-5=-9c | | 2(x-3)=0 | | 8y=-3(y+1) | | 1.1x+0.9=1.8 | | =(x-6)(x+9) | | -4x^2-2x=2 | | y=390+11(-30) | | 8a^3+14a+3a= | | y=4+9x | | y=-780+1452 | | y=-200-6(-16) | | =3x(2x^2-5) | | 8x+4x=-4 | | y=-200-6(-12) | | (y*2+6-7)*2*x+7=34*y-1 | | (x^2+6-7)2y+7=34x-1 | | Y=-9x^2 | | (x*2+6-7)*2*y+7=34*x-1 | | (2b+50)+b+(.5)100=1500 | | =6x^2+19x+10 | | t^2-8t=-13 | | =x^2-5x-24 | | -8r=-4-2r^2 | | -3/51=z/17 | | =x^2-49 | | 12x+5=3x+4 | | y/3=-48/9 | | =6ax^2+3a^5x^7 | | -16x-80=4x+20 | | 12x+36=-3x-39 |

Equations solver categories