18(x^2-1)=77x

Simple and best practice solution for 18(x^2-1)=77x 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 18(x^2-1)=77x equation:


Simplifying
18(x2 + -1) = 77x

Reorder the terms:
18(-1 + x2) = 77x
(-1 * 18 + x2 * 18) = 77x
(-18 + 18x2) = 77x

Solving
-18 + 18x2 = 77x

Solving for variable 'x'.

Reorder the terms:
-18 + -77x + 18x2 = 77x + -77x

Combine like terms: 77x + -77x = 0
-18 + -77x + 18x2 = 0

Factor a trinomial.
(-2 + -9x)(9 + -2x) = 0

Subproblem 1

Set the factor '(-2 + -9x)' equal to zero and attempt to solve: Simplifying -2 + -9x = 0 Solving -2 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -9x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -9x = 0 + 2 -9x = 0 + 2 Combine like terms: 0 + 2 = 2 -9x = 2 Divide each side by '-9'. x = -0.2222222222 Simplifying x = -0.2222222222

Subproblem 2

Set the factor '(9 + -2x)' equal to zero and attempt to solve: Simplifying 9 + -2x = 0 Solving 9 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -2x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -2x = 0 + -9 -2x = 0 + -9 Combine like terms: 0 + -9 = -9 -2x = -9 Divide each side by '-2'. x = 4.5 Simplifying x = 4.5

Solution

x = {-0.2222222222, 4.5}

See similar equations:

| 1.25-32= | | 13m-8m= | | -281=13a-8 | | 1.25+32= | | 3(6+x)-8=2x-23 | | 2w^2-6w-87=0 | | 7=cm+3 | | 3(200-.33)+y=600 | | 7x+23=-2(x+2) | | 2w^2+6w-870=0 | | 4H-2H=100 | | 16=6y-2-8y | | 2t^2-16t=0 | | -12=12x-10 | | 0.10(10-14x)=16+(8x+12) | | 2(-3a+5)=-4a-16 | | -4y-7=8-9y | | 2x^2+36x+176=0 | | -192=-6(n+11) | | 8(2n-3)=(6n+1)+6 | | 3x+y=600 | | 3-3.2+2=14.6 | | 2x^2+35x+176=0 | | 5v+13=10 | | 7=1.5*2-2 | | 8x+6=8y+20 | | 10x+11-8x-17=4 | | 5x+9=3(x-5)+7 | | 19x+11=21x-1 | | 4w+11=71 | | -5(3+2p)=45 | | 10+-27r=9 |

Equations solver categories