(3x+2)-(x^2-5)=

Simple and best practice solution for (3x+2)-(x^2-5)= 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 (3x+2)-(x^2-5)= equation:


Simplifying
(3x + 2) + -1(x2 + -5) = 0

Reorder the terms:
(2 + 3x) + -1(x2 + -5) = 0

Remove parenthesis around (2 + 3x)
2 + 3x + -1(x2 + -5) = 0

Reorder the terms:
2 + 3x + -1(-5 + x2) = 0
2 + 3x + (-5 * -1 + x2 * -1) = 0
2 + 3x + (5 + -1x2) = 0

Reorder the terms:
2 + 5 + 3x + -1x2 = 0

Combine like terms: 2 + 5 = 7
7 + 3x + -1x2 = 0

Solving
7 + 3x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-7 + -3x + x2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -3x + 7 + x2 = 0 + 7

Reorder the terms:
-7 + 7 + -3x + x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -3x + x2 = 0 + 7
-3x + x2 = 0 + 7

Combine like terms: 0 + 7 = 7
-3x + x2 = 7

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 7 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 7 + 2.25

Combine like terms: 7 + 2.25 = 9.25
2.25 + -3x + x2 = 9.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 9.25

Calculate the square root of the right side: 3.041381265

Break this problem into two subproblems by setting 
(x + -1.5) equal to 3.041381265 and -3.041381265.

Subproblem 1

x + -1.5 = 3.041381265 Simplifying x + -1.5 = 3.041381265 Reorder the terms: -1.5 + x = 3.041381265 Solving -1.5 + x = 3.041381265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 3.041381265 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 3.041381265 + 1.5 x = 3.041381265 + 1.5 Combine like terms: 3.041381265 + 1.5 = 4.541381265 x = 4.541381265 Simplifying x = 4.541381265

Subproblem 2

x + -1.5 = -3.041381265 Simplifying x + -1.5 = -3.041381265 Reorder the terms: -1.5 + x = -3.041381265 Solving -1.5 + x = -3.041381265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -3.041381265 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -3.041381265 + 1.5 x = -3.041381265 + 1.5 Combine like terms: -3.041381265 + 1.5 = -1.541381265 x = -1.541381265 Simplifying x = -1.541381265

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.541381265, -1.541381265}

See similar equations:

| -6y+3=-3*2y-1 | | -7p-12=-4+3(-4-p) | | 3*x-5=2*x+5 | | (5x-7)(x-3)=0 | | 16n-72=216 | | 20=-B/0.2 | | 3x-7y=15fory | | 5-12u=10-7u | | 12+4x=2(-x+6)-44 | | 0.18+m=-4.50 | | 77=21 | | Y-1.6=-2.2 | | 2x+4*4=3x-1*5 | | 4.5x+9.5=2+2.3x | | 6x+a=5(x+t) | | 3(v-87)=-12 | | 40-2+2=10(x) | | 12y-12x=xy | | B/12.8=-13.306 | | 72=(b)4 | | 2(v+25)=90 | | 2x+5*20=420 | | 1/6h=7.4 | | 6/x=x/4 | | 2.8n-1.8n+8.9=2.6 | | B/12.8 | | 42-2+x=10(x) | | X/7-98=-92 | | 4b+7+5=-15 | | 44-2+x=10(x) | | (x+5)y=x+5 | | ln(5)-ln(x)=ln(1/25) |

Equations solver categories