4x^2-25+7=-9x+2

Simple and best practice solution for 4x^2-25+7=-9x+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^2-25+7=-9x+2 equation:


Simplifying
4x2 + -25 + 7 = -9x + 2

Reorder the terms:
-25 + 7 + 4x2 = -9x + 2

Combine like terms: -25 + 7 = -18
-18 + 4x2 = -9x + 2

Reorder the terms:
-18 + 4x2 = 2 + -9x

Solving
-18 + 4x2 = 2 + -9x

Solving for variable 'x'.

Reorder the terms:
-18 + -2 + 9x + 4x2 = 2 + -9x + -2 + 9x

Combine like terms: -18 + -2 = -20
-20 + 9x + 4x2 = 2 + -9x + -2 + 9x

Reorder the terms:
-20 + 9x + 4x2 = 2 + -2 + -9x + 9x

Combine like terms: 2 + -2 = 0
-20 + 9x + 4x2 = 0 + -9x + 9x
-20 + 9x + 4x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-20 + 9x + 4x2 = 0

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

Divide each side by '4'.
-5 + 2.25x + x2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + 2.25x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + 2.25x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 2.25x + x2 = 0 + 5
2.25x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
2.25x + x2 = 5

The x term is 2.25x.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25x + 1.265625 + x2 = 5 + 1.265625

Reorder the terms:
1.265625 + 2.25x + x2 = 5 + 1.265625

Combine like terms: 5 + 1.265625 = 6.265625
1.265625 + 2.25x + x2 = 6.265625

Factor a perfect square on the left side:
(x + 1.125)(x + 1.125) = 6.265625

Calculate the square root of the right side: 2.503123049

Break this problem into two subproblems by setting 
(x + 1.125) equal to 2.503123049 and -2.503123049.

Subproblem 1

x + 1.125 = 2.503123049 Simplifying x + 1.125 = 2.503123049 Reorder the terms: 1.125 + x = 2.503123049 Solving 1.125 + x = 2.503123049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = 2.503123049 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = 2.503123049 + -1.125 x = 2.503123049 + -1.125 Combine like terms: 2.503123049 + -1.125 = 1.378123049 x = 1.378123049 Simplifying x = 1.378123049

Subproblem 2

x + 1.125 = -2.503123049 Simplifying x + 1.125 = -2.503123049 Reorder the terms: 1.125 + x = -2.503123049 Solving 1.125 + x = -2.503123049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + x = -2.503123049 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + x = -2.503123049 + -1.125 x = -2.503123049 + -1.125 Combine like terms: -2.503123049 + -1.125 = -3.628123049 x = -3.628123049 Simplifying x = -3.628123049

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.378123049, -3.628123049}

See similar equations:

| 7x-22=9x+42 | | 5-2x-8=9 | | 3v-(9v+13)=-v+7 | | 4x+5=3-2y | | 2(x+10)=2x-5 | | 3.4+.02m=1 | | x+10/x-5=6/3 | | 3d+4=21-3d-1/2 | | 6x^2+x-16=0 | | 8x^3=4 | | x^3+2x=59049 | | (27)0-32-2/3 | | B+4b=-5 | | 56x+78x=267 | | 2n-6n=20 | | 6m-4=2m | | 6r-4r=2 | | x-(x/2)=1-((x-2)/3) | | 4(2x+11)=2(x-13) | | 6+17g=13z+18 | | 0.25(1x-180)=x | | x+3=-22 | | r/-13=12 | | (x+7)(x-6)=0 | | (-b+8.50)=0.95 | | 6x-9-20+4x=24 | | 5(x+1)=-55 | | -4(-8m+1)=-36 | | 0.75*1x=1x+180 | | -2+4x-5-x=-7 | | 4/9*5/8 | | x-(x/2)=1-(x-2/3) |

Equations solver categories