4x^2-4x-7+5x^2-8x-2=

Simple and best practice solution for 4x^2-4x-7+5x^2-8x-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 4x^2-4x-7+5x^2-8x-2= equation:


Simplifying
4x2 + -4x + -7 + 5x2 + -8x + -2 = 0

Reorder the terms:
-7 + -2 + -4x + -8x + 4x2 + 5x2 = 0

Combine like terms: -7 + -2 = -9
-9 + -4x + -8x + 4x2 + 5x2 = 0

Combine like terms: -4x + -8x = -12x
-9 + -12x + 4x2 + 5x2 = 0

Combine like terms: 4x2 + 5x2 = 9x2
-9 + -12x + 9x2 = 0

Solving
-9 + -12x + 9x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + -4x + 3x2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -4x + 3x2)' equal to zero and attempt to solve: Simplifying -3 + -4x + 3x2 = 0 Solving -3 + -4x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -1 + -1.333333333x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + -1.333333333x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + -1.333333333x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1.333333333x + x2 = 0 + 1 -1.333333333x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 -1.333333333x + x2 = 1 The x term is -1.333333333x. Take half its coefficient (-0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. -1.333333333x + 0.4444444442 + x2 = 1 + 0.4444444442 Reorder the terms: 0.4444444442 + -1.333333333x + x2 = 1 + 0.4444444442 Combine like terms: 1 + 0.4444444442 = 1.4444444442 0.4444444442 + -1.333333333x + x2 = 1.4444444442 Factor a perfect square on the left side: (x + -0.6666666665)(x + -0.6666666665) = 1.4444444442 Calculate the square root of the right side: 1.201850425 Break this problem into two subproblems by setting (x + -0.6666666665) equal to 1.201850425 and -1.201850425.

Subproblem 1

x + -0.6666666665 = 1.201850425 Simplifying x + -0.6666666665 = 1.201850425 Reorder the terms: -0.6666666665 + x = 1.201850425 Solving -0.6666666665 + x = 1.201850425 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = 1.201850425 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = 1.201850425 + 0.6666666665 x = 1.201850425 + 0.6666666665 Combine like terms: 1.201850425 + 0.6666666665 = 1.8685170915 x = 1.8685170915 Simplifying x = 1.8685170915

Subproblem 2

x + -0.6666666665 = -1.201850425 Simplifying x + -0.6666666665 = -1.201850425 Reorder the terms: -0.6666666665 + x = -1.201850425 Solving -0.6666666665 + x = -1.201850425 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6666666665' to each side of the equation. -0.6666666665 + 0.6666666665 + x = -1.201850425 + 0.6666666665 Combine like terms: -0.6666666665 + 0.6666666665 = 0.0000000000 0.0000000000 + x = -1.201850425 + 0.6666666665 x = -1.201850425 + 0.6666666665 Combine like terms: -1.201850425 + 0.6666666665 = -0.5351837585 x = -0.5351837585 Simplifying x = -0.5351837585

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.8685170915, -0.5351837585}

Solution

x = {1.8685170915, -0.5351837585}

See similar equations:

| h=5t^2-10t | | H=5t^2-10 | | 120=1/2[360-x)-x] | | -3(x+2)=2(x+5) | | (x^2-25)(2x+3)=0 | | 2x+3x-41=0 | | 115=x*9.8 | | 8-(2x+5)= | | N/2-6=-3 | | 1300x+500y=234500 | | 5x-2x=49 | | a+(7+6)=(a+7)+6 | | 33-5x=3x+1 | | 13x+5y=2345 | | -5x-9=6x-97 | | v=4/3*3.14*(9)3 | | v=4/3*3.14*(6)3 | | 0=4(15t-4t^2) | | 4b-7-3b=9 | | 0=4(15t-47) | | f(-x)=(4x^2-1/x^2) | | v=4/3*3.14*(18)3 | | F(x)=4x-3x^2-6x+7 | | v=4/3*3.14*(10)3 | | 5x+3=-107-5x | | v=4/3*3.14*(7)3 | | (2+w)(4w+5)=0 | | 4x^2+30x-100=0 | | s+12=60 | | (x^2-2y^2)*dx+xy*dy=0 | | c=c*c+16 | | 1-6x=-3-5x+5-7 |

Equations solver categories