21x^2=12+19x

Simple and best practice solution for 21x^2=12+19x 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 21x^2=12+19x equation:


Simplifying
21x2 = 12 + 19x

Solving
21x2 = 12 + 19x

Solving for variable 'x'.

Reorder the terms:
-12 + -19x + 21x2 = 12 + 19x + -12 + -19x

Reorder the terms:
-12 + -19x + 21x2 = 12 + -12 + 19x + -19x

Combine like terms: 12 + -12 = 0
-12 + -19x + 21x2 = 0 + 19x + -19x
-12 + -19x + 21x2 = 19x + -19x

Combine like terms: 19x + -19x = 0
-12 + -19x + 21x2 = 0

Factor a trinomial.
(-3 + -7x)(4 + -3x) = 0

Subproblem 1

Set the factor '(-3 + -7x)' equal to zero and attempt to solve: Simplifying -3 + -7x = 0 Solving -3 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -7x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -7x = 0 + 3 -7x = 0 + 3 Combine like terms: 0 + 3 = 3 -7x = 3 Divide each side by '-7'. x = -0.4285714286 Simplifying x = -0.4285714286

Subproblem 2

Set the factor '(4 + -3x)' equal to zero and attempt to solve: Simplifying 4 + -3x = 0 Solving 4 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -3x = 0 + -4 -3x = 0 + -4 Combine like terms: 0 + -4 = -4 -3x = -4 Divide each side by '-3'. x = 1.333333333 Simplifying x = 1.333333333

Solution

x = {-0.4285714286, 1.333333333}

See similar equations:

| Y-(4-2y)=7 | | 4(-2y+12)+2y=-12 | | -5[2x+7]=-55 | | 4x/4=-64/4 | | T-3=5/8 | | 21x^2=12+9 | | N-(n/5)=60 | | 3x-x+2=-8 | | 4x+1.2(6x+6)=2(4x+3) | | 0.00n+15=22 | | 0.0058=4x^3 | | W/4==16 | | p^2-10p+14= | | 13/4x=26 | | 4(7x)=-36 | | 0=k^2-28k+40 | | m(x+a)=4(2x+10) | | 0.0031=4x^3 | | 15=2+-11 | | k^2=-14k | | 40=b/5 | | 232=8(5x-1) | | 11/15x=66 | | N-1/5=60 | | -4u+2(u+4)=22 | | -3a+24+9a=5a-7a | | 5w+6(w-5)=-8 | | B/5=-40 | | 8(x+3)-5x=27 | | -4(-1y+8)=-52 | | 10-a=23 | | x-6+81=2x+1 |

Equations solver categories