6x^2-12x-90=18

Simple and best practice solution for 6x^2-12x-90=18 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 6x^2-12x-90=18 equation:


Simplifying
6x2 + -12x + -90 = 18

Reorder the terms:
-90 + -12x + 6x2 = 18

Solving
-90 + -12x + 6x2 = 18

Solving for variable 'x'.

Reorder the terms:
-90 + -18 + -12x + 6x2 = 18 + -18

Combine like terms: -90 + -18 = -108
-108 + -12x + 6x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-108 + -12x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(-18 + -2x + x2) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(-18 + -2x + x2)' equal to zero and attempt to solve: Simplifying -18 + -2x + x2 = 0 Solving -18 + -2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '18' to each side of the equation. -18 + -2x + 18 + x2 = 0 + 18 Reorder the terms: -18 + 18 + -2x + x2 = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -2x + x2 = 0 + 18 -2x + x2 = 0 + 18 Combine like terms: 0 + 18 = 18 -2x + x2 = 18 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = 18 + 1 Reorder the terms: 1 + -2x + x2 = 18 + 1 Combine like terms: 18 + 1 = 19 1 + -2x + x2 = 19 Factor a perfect square on the left side: (x + -1)(x + -1) = 19 Calculate the square root of the right side: 4.358898944 Break this problem into two subproblems by setting (x + -1) equal to 4.358898944 and -4.358898944.

Subproblem 1

x + -1 = 4.358898944 Simplifying x + -1 = 4.358898944 Reorder the terms: -1 + x = 4.358898944 Solving -1 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 4.358898944 + 1 Combine like terms: -1 + 1 = 0 0 + x = 4.358898944 + 1 x = 4.358898944 + 1 Combine like terms: 4.358898944 + 1 = 5.358898944 x = 5.358898944 Simplifying x = 5.358898944

Subproblem 2

x + -1 = -4.358898944 Simplifying x + -1 = -4.358898944 Reorder the terms: -1 + x = -4.358898944 Solving -1 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -4.358898944 + 1 Combine like terms: -1 + 1 = 0 0 + x = -4.358898944 + 1 x = -4.358898944 + 1 Combine like terms: -4.358898944 + 1 = -3.358898944 x = -3.358898944 Simplifying x = -3.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.358898944, -3.358898944}

Solution

x = {5.358898944, -3.358898944}

See similar equations:

| 51+(x-5)+(y-6)=180 | | b-b*8=bb+65% | | 6n^2+7n+2=0 | | 6n^2+15n+6=0 | | 4k+4h+5d+8m= | | 8r+12rs= | | n-2=n*33-23n-45 | | 9x^2+30x+16=y | | 3(12k-4)=132 | | 12k+15-11k= | | -30=7(u-6)-3u | | n-2=n*33-23n-4 | | (x-3)(x+3)=2 | | 40+4y-9=5y | | 32400+100x+0.1x^2=0 | | 5x+85=3x+6 | | n-2=n*33 | | 2(5+7a)=.75(3a-10) | | G(t)=-(t-2)+2 | | In(6x+5)-ln(x)=on(7) | | n-2=n*32 | | 5x=-x+8 | | -15+2(x)=31 | | 6-(3x-5)+8= | | 9I-(6I-2)=8 | | 5=300-5 | | -4=-7y+5(y+2) | | n-2=n*4 | | 6k=76 | | -3(15x+32)= | | 8xy=24xy | | Z^2+2*z+(1-8*i)=0 |

Equations solver categories