21x^2-44x+15=0

Simple and best practice solution for 21x^2-44x+15=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 21x^2-44x+15=0 equation:


Simplifying
21x2 + -44x + 15 = 0

Reorder the terms:
15 + -44x + 21x2 = 0

Solving
15 + -44x + 21x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + -7x)(5 + -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 '(5 + -3x)' equal to zero and attempt to solve: Simplifying 5 + -3x = 0 Solving 5 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -3x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3x = 0 + -5 -3x = 0 + -5 Combine like terms: 0 + -5 = -5 -3x = -5 Divide each side by '-3'. x = 1.666666667 Simplifying x = 1.666666667

Solution

x = {0.4285714286, 1.666666667}

See similar equations:

| 68+5x=11x+2 | | 4(x+5)=2x+9 | | 6x+26=14 | | 3x^2+11x+18=0 | | -6-2x=12-8x | | 13=y+22 | | a^2-2a-24=0 | | x^3-27x-54=0 | | 15+12x=-9 | | -73-7x=8x+17 | | x*x+4*x=7 | | 8c-6c=18 | | 68x+5x=11x+2 | | b^2-30b+40=0 | | 3b-5-2b=-5 | | 2w+5=4 | | 6x+8=-67-9x | | 18x+6=114 | | Z+15=9 | | 0=5x^4-20x^3+15x^2-8x+1 | | X+22=4 | | Y+20=5 | | x^2-21x+84=0 | | b^2-10b+12=0 | | 4x-5=79-8x | | 6x+8=67-9x | | 8x+3=5x+21 | | 2x-6=-12 | | 0=5x^4-20yx^3+15(y^2)x^2-8(y^3)x+y^4 | | 30+6p=30 | | 5n+9=2 | | 6x^5+x^4-28x^3-3x^2+16x-4=0 |

Equations solver categories