-x^2+4x+7-2x+9x=

Simple and best practice solution for -x^2+4x+7-2x+9x= 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+4x+7-2x+9x= equation:


Simplifying
-1x2 + 4x + 7 + -2x + 9x = 0

Reorder the terms:
7 + 4x + -2x + 9x + -1x2 = 0

Combine like terms: 4x + -2x = 2x
7 + 2x + 9x + -1x2 = 0

Combine like terms: 2x + 9x = 11x
7 + 11x + -1x2 = 0

Solving
7 + 11x + -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 + -11x + x2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -11x + 7 + x2 = 0 + 7

Reorder the terms:
-7 + 7 + -11x + x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -11x + x2 = 0 + 7
-11x + x2 = 0 + 7

Combine like terms: 0 + 7 = 7
-11x + x2 = 7

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 7 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 7 + 30.25

Combine like terms: 7 + 30.25 = 37.25
30.25 + -11x + x2 = 37.25

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 37.25

Calculate the square root of the right side: 6.103277808

Break this problem into two subproblems by setting 
(x + -5.5) equal to 6.103277808 and -6.103277808.

Subproblem 1

x + -5.5 = 6.103277808 Simplifying x + -5.5 = 6.103277808 Reorder the terms: -5.5 + x = 6.103277808 Solving -5.5 + x = 6.103277808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 6.103277808 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 6.103277808 + 5.5 x = 6.103277808 + 5.5 Combine like terms: 6.103277808 + 5.5 = 11.603277808 x = 11.603277808 Simplifying x = 11.603277808

Subproblem 2

x + -5.5 = -6.103277808 Simplifying x + -5.5 = -6.103277808 Reorder the terms: -5.5 + x = -6.103277808 Solving -5.5 + x = -6.103277808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -6.103277808 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -6.103277808 + 5.5 x = -6.103277808 + 5.5 Combine like terms: -6.103277808 + 5.5 = -0.603277808 x = -0.603277808 Simplifying x = -0.603277808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.603277808, -0.603277808}

See similar equations:

| -63-150=57-30 | | (2r+24/8)=(3r-27/3) | | 2r+24/8=3r-27/3 | | 4x^3+6x^2-10x+2=0 | | 7(8-2n)-70=-84 | | -63-10x=57-2x | | y+3=0(x-4) | | r/4=r+3/8 | | 5/7.5=0.6/k | | 2(b-20)+6=-10 | | x/12=4/8 | | 7(8-2n)-70=-80 | | 6x(x-6)-8(x+2)=-18 | | 11+2x=2(x+4) | | p-3v/3 | | 8(m-4)=24 | | 12x-54=7x+61 | | 4(1.2)-3(2.4)=12 | | 4y+10=-y+25 | | 16x^2-88x+120=0 | | 2x=5+3(4x-3) | | 67384753487x-2634857623498576234857628973456982374658792346587236498526345y=9999999999989999999799999999999999996999999999995999949999399999299999991991824597816348506213897 | | (x+10)(x-12)=0 | | X^2-7x+14/4=11/2 | | 6y^5/7y*4/y | | (x^2+1)(x^3+2x)(x^2+4x-16i-4xi)=0 | | X^2-7x+14/4 | | X^2-7x+14/2 | | 1/3x^-3=0 | | 5y^9/6y*5/y | | 4(3x-4)=2(6x+6) | | 6[3-4(4+2x)]-4x=-8+2(1-8x) |

Equations solver categories