(4x^2+4x-3)+(-9x^2+6)=

Simple and best practice solution for (4x^2+4x-3)+(-9x^2+6)= 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-3)+(-9x^2+6)= equation:


Simplifying
(4x2 + 4x + -3) + (-9x2 + 6) = 0

Reorder the terms:
(-3 + 4x + 4x2) + (-9x2 + 6) = 0

Remove parenthesis around (-3 + 4x + 4x2)
-3 + 4x + 4x2 + (-9x2 + 6) = 0

Reorder the terms:
-3 + 4x + 4x2 + (6 + -9x2) = 0

Remove parenthesis around (6 + -9x2)
-3 + 4x + 4x2 + 6 + -9x2 = 0

Reorder the terms:
-3 + 6 + 4x + 4x2 + -9x2 = 0

Combine like terms: -3 + 6 = 3
3 + 4x + 4x2 + -9x2 = 0

Combine like terms: 4x2 + -9x2 = -5x2
3 + 4x + -5x2 = 0

Solving
3 + 4x + -5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-0.6 + -0.8x + x2 = 0

Move the constant term to the right:

Add '0.6' to each side of the equation.
-0.6 + -0.8x + 0.6 + x2 = 0 + 0.6

Reorder the terms:
-0.6 + 0.6 + -0.8x + x2 = 0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + -0.8x + x2 = 0 + 0.6
-0.8x + x2 = 0 + 0.6

Combine like terms: 0 + 0.6 = 0.6
-0.8x + x2 = 0.6

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = 0.6 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = 0.6 + 0.16

Combine like terms: 0.6 + 0.16 = 0.76
0.16 + -0.8x + x2 = 0.76

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 0.76

Calculate the square root of the right side: 0.871779789

Break this problem into two subproblems by setting 
(x + -0.4) equal to 0.871779789 and -0.871779789.

Subproblem 1

x + -0.4 = 0.871779789 Simplifying x + -0.4 = 0.871779789 Reorder the terms: -0.4 + x = 0.871779789 Solving -0.4 + x = 0.871779789 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 0.871779789 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 0.871779789 + 0.4 x = 0.871779789 + 0.4 Combine like terms: 0.871779789 + 0.4 = 1.271779789 x = 1.271779789 Simplifying x = 1.271779789

Subproblem 2

x + -0.4 = -0.871779789 Simplifying x + -0.4 = -0.871779789 Reorder the terms: -0.4 + x = -0.871779789 Solving -0.4 + x = -0.871779789 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -0.871779789 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -0.871779789 + 0.4 x = -0.871779789 + 0.4 Combine like terms: -0.871779789 + 0.4 = -0.471779789 x = -0.471779789 Simplifying x = -0.471779789

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.271779789, -0.471779789}

See similar equations:

| -3(1-2h)=27 | | 63=-3(2-1n) | | Y+(y+122)=354 | | 8-3x=2(x+4) | | P(x)=2x^3+5x^2-3x | | 2(k+4)+3k= | | 8-3x=2x+4 | | 3a-7=5a-15 | | 4(6a+2)=-22-3a | | 75x-17-55x=63 | | -2x-3x=-16+x | | 16+g=36 | | 4(2r+5)=84 | | 2.9x-0.25=0.43x+0.03 | | 16x^2+7=-24x-2 | | 2x(5y+3)=9xy | | 11+4j= | | 9x+28-7x-3=39 | | -7x-7(2x-7)=-182 | | .2x+5=-10 | | 0.1x=15 | | 17=-3v-8v | | 60-6f= | | 3(m+6)+7m=68 | | 5v^2-10v+83=0 | | 33=7x-4(-3x-17) | | x+10+4x+2x+5=180 | | -5y-5(-6y-2y)=0 | | 15+11x-7-5x=26 | | 4+3x+2=-5x+6+8x | | 7w=w+24 | | 5x+2(11+-4x)=82+x |

Equations solver categories