2x^2-5x-20=x^2-9x+1

Simple and best practice solution for 2x^2-5x-20=x^2-9x+1 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 2x^2-5x-20=x^2-9x+1 equation:


Simplifying
2x2 + -5x + -20 = x2 + -9x + 1

Reorder the terms:
-20 + -5x + 2x2 = x2 + -9x + 1

Reorder the terms:
-20 + -5x + 2x2 = 1 + -9x + x2

Solving
-20 + -5x + 2x2 = 1 + -9x + x2

Solving for variable 'x'.

Reorder the terms:
-20 + -1 + -5x + 9x + 2x2 + -1x2 = 1 + -9x + x2 + -1 + 9x + -1x2

Combine like terms: -20 + -1 = -21
-21 + -5x + 9x + 2x2 + -1x2 = 1 + -9x + x2 + -1 + 9x + -1x2

Combine like terms: -5x + 9x = 4x
-21 + 4x + 2x2 + -1x2 = 1 + -9x + x2 + -1 + 9x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
-21 + 4x + 1x2 = 1 + -9x + x2 + -1 + 9x + -1x2

Reorder the terms:
-21 + 4x + 1x2 = 1 + -1 + -9x + 9x + x2 + -1x2

Combine like terms: 1 + -1 = 0
-21 + 4x + 1x2 = 0 + -9x + 9x + x2 + -1x2
-21 + 4x + 1x2 = -9x + 9x + x2 + -1x2

Combine like terms: -9x + 9x = 0
-21 + 4x + 1x2 = 0 + x2 + -1x2
-21 + 4x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-21 + 4x + 1x2 = 0

Factor a trinomial.
(-7 + -1x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 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 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-7, 3}

See similar equations:

| 2.25-0.50x=0.375x+0.50 | | 9.9x=39.6 | | 2y+-685=85 | | n(n^2-7n-1)+7=0 | | -(-9x)=(-53) | | 5y+8=4y+1 | | 2c-21=3-4c | | 6x^2-22x+14=0 | | 6x^2=19x-15 | | 2y+685=85 | | n^2-7n-1=0 | | 6x^2+73x+12=0 | | 7x+2=8x | | 2y+685=-85 | | 12t^2-23t-24=0 | | 12t^2-23x-24=0 | | 6x=5x-6 | | 1.14y-2=y+1.64 | | 18b+15b=33 | | (n^3-7n^2-n)+7=0 | | 4x+4=5x | | x^2-10x+10=-20 | | 2x^3+15x^2-84x+17= | | 12=t+14 | | 6.75+c=12.95 | | 9x^2*42x+49=0 | | 16m^4-81m^2=0 | | 20x^2+17x-24=0 | | (3x)2=(5x+12) | | log^5(x+7)=2 | | x-3.2=4.1 | | -6x+9=5x-2 |

Equations solver categories