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

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


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

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

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

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

Solving for variable 'x'.

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

Combine like terms: -5 + 2 = -3
-3 + 9x + -1x + x2 = -2 + x + 2 + -1x

Combine like terms: 9x + -1x = 8x
-3 + 8x + x2 = -2 + x + 2 + -1x

Reorder the terms:
-3 + 8x + x2 = -2 + 2 + x + -1x

Combine like terms: -2 + 2 = 0
-3 + 8x + x2 = 0 + x + -1x
-3 + 8x + x2 = x + -1x

Combine like terms: x + -1x = 0
-3 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 8x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 8x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 8x + x2 = 0 + 3
8x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
8x + x2 = 3

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 3 + 16

Reorder the terms:
16 + 8x + x2 = 3 + 16

Combine like terms: 3 + 16 = 19
16 + 8x + x2 = 19

Factor a perfect square on the left side:
(x + 4)(x + 4) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(x + 4) equal to 4.358898944 and -4.358898944.

Subproblem 1

x + 4 = 4.358898944 Simplifying x + 4 = 4.358898944 Reorder the terms: 4 + x = 4.358898944 Solving 4 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 4.358898944 + -4 Combine like terms: 4 + -4 = 0 0 + x = 4.358898944 + -4 x = 4.358898944 + -4 Combine like terms: 4.358898944 + -4 = 0.358898944 x = 0.358898944 Simplifying x = 0.358898944

Subproblem 2

x + 4 = -4.358898944 Simplifying x + 4 = -4.358898944 Reorder the terms: 4 + x = -4.358898944 Solving 4 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -4.358898944 + -4 Combine like terms: 4 + -4 = 0 0 + x = -4.358898944 + -4 x = -4.358898944 + -4 Combine like terms: -4.358898944 + -4 = -8.358898944 x = -8.358898944 Simplifying x = -8.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.358898944, -8.358898944}

See similar equations:

| x-2-6296-2819= | | 3x+8-x=16 | | -6x^2+25x-26=0 | | 3n^2-17n-90=0 | | x+x+3=y | | 5p+7p+6p-6= | | 5X+5(80+X)=3650 | | 2(x+2)=4(3x-9) | | =-8(2x+-4)+5 | | 3x+3-x+2=x+8 | | x-2819*6296-2819= | | 3x^2+5x-6=-2x^2+3x+7 | | =-7x+4(3x-6) | | -7x-112=112+x | | =-3-8(-5x-1) | | x-2819*2819-6296= | | -2(x+2)-7=-8x+6(x-2) | | -2(x+2)-7=-8+6(x-2) | | 25x=21x-4 | | x-2819*3-6296= | | x-2819*1-6296= | | x/4-1/4=-3 | | 40x^2-7x-3500=1500 | | x/4-14=-3 | | 3tan^2(x)sec^2(x)= | | =9x-4(2x+5) | | x-2819*9-6296= | | 4=x/40 | | x-2819*7-6296= | | 2x+29=33 | | 6000x^2-400x-400=0 | | x-2819*6-6296= |

Equations solver categories