12x^2+19x-21=0

Simple and best practice solution for 12x^2+19x-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 12x^2+19x-21=0 equation:


Simplifying
12x2 + 19x + -21 = 0

Reorder the terms:
-21 + 19x + 12x2 = 0

Solving
-21 + 19x + 12x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333

Subproblem 2

Set the factor '(3 + -4x)' equal to zero and attempt to solve: Simplifying 3 + -4x = 0 Solving 3 + -4x = 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 + -4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4x = 0 + -3 -4x = 0 + -3 Combine like terms: 0 + -3 = -3 -4x = -3 Divide each side by '-4'. x = 0.75 Simplifying x = 0.75

Solution

x = {-2.333333333, 0.75}

See similar equations:

| 10x^2+27x-28=0 | | 2a+1=5 | | 9x^2+42x+49=0 | | 5y+7=32 | | 6x^2-12x+24=0 | | 8x^2-12x-28=0 | | 3y+5=15 | | 5(m+2)-6(m-3)=53 | | 4a-3+5a=15 | | 4a-3+5a+5=15 | | -x^2+5x=-7 | | 3(x+2)+2(x-4)=x-3(x+3) | | 3x+8+4x-x=26 | | 11x+4=6x+29 | | 2+6(5x-1)=14 | | 12x^2+6= | | 12x^2-12x+4=0 | | (2-3y)*5+(8-y)*(-4)=0 | | (12-3x)*2=9(7x+18) | | 4(2x+3)=3(3x+2) | | -16x^2+96x+12=152 | | 3x^2=8x | | 26x^2+156x-7280=0 | | 9x^2=2x | | 5(x-4)=7 | | 4(x-4)=7 | | x(5x-2)=7 | | x(5x-6)=11 | | x(5x-2)=24 | | (x+3)(x+19)=0 | | 6x^2-6=-5x | | 15c+30=.3(102-12c) |

Equations solver categories