8X^2-18x-21=0

Simple and best practice solution for 8X^2-18x-21=0 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 8X^2-18x-21=0 equation:


Simplifying
8X2 + -18x + -21 = 0

Reorder the terms:
-21 + 8X2 + -18x = 0

Solving
-21 + 8X2 + -18x = 0

Solving for variable 'X'.

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

Add '21' to each side of the equation.
-21 + 8X2 + 21 + -18x = 0 + 21

Reorder the terms:
-21 + 21 + 8X2 + -18x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 8X2 + -18x = 0 + 21
8X2 + -18x = 0 + 21

Combine like terms: 0 + 21 = 21
8X2 + -18x = 21

Add '18x' to each side of the equation.
8X2 + -18x + 18x = 21 + 18x

Combine like terms: -18x + 18x = 0
8X2 + 0 = 21 + 18x
8X2 = 21 + 18x

Divide each side by '8'.
X2 = 2.625 + 2.25x

Simplifying
X2 = 2.625 + 2.25x

Reorder the terms:
-2.625 + X2 + -2.25x = 2.625 + 2.25x + -2.625 + -2.25x

Reorder the terms:
-2.625 + X2 + -2.25x = 2.625 + -2.625 + 2.25x + -2.25x

Combine like terms: 2.625 + -2.625 = 0.000
-2.625 + X2 + -2.25x = 0.000 + 2.25x + -2.25x
-2.625 + X2 + -2.25x = 2.25x + -2.25x

Combine like terms: 2.25x + -2.25x = 0.00
-2.625 + X2 + -2.25x = 0.00

The solution to this equation could not be determined.

See similar equations:

| 60=6(c-84) | | 4x+3=23q | | 4x+3x(5x-8)=33 | | 4x=48whatisx | | x^2-6x-720=0 | | 8g-35=53 | | x+5=-9+3x | | 11x=18-16x | | -9x+=80 | | -2x^2+8x+6=0 | | 6x^2+10=12 | | 400+5w=1200 | | 11+9t=10 | | 20c=-4+19c | | X^2-155=0 | | 8y^2+56y+96=0 | | 6d+3d+4d-2=3d | | 4x=20-6x^2 | | (n/2)-9=-5 | | e^7x=1 | | h-7/8h=-5/6 | | 6+3+x=19 | | 4x+7=-28-3x | | 180=12n | | 6+0.1x=0 | | g+8=12 | | 8+3x=6+x | | 3(a+7)-5a=7-2(a-4) | | 12x(x+2)=12x+2 | | 5k^2+2k-3=0 | | -32+8d=-7(4d-5) | | 3c^2-33c-78=0 |

Equations solver categories