2y*2y-7y-22=0

Simple and best practice solution for 2y*2y-7y-22=0 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 2y*2y-7y-22=0 equation:


Simplifying
2y * 2y + -7y + -22 = 0

Reorder the terms for easier multiplication:
2 * 2y * y + -7y + -22 = 0

Multiply 2 * 2
4y * y + -7y + -22 = 0

Multiply y * y
4y2 + -7y + -22 = 0

Reorder the terms:
-22 + -7y + 4y2 = 0

Solving
-22 + -7y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
-5.5 + -1.75y + y2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + -1.75y + 5.5 + y2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + -1.75y + y2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + -1.75y + y2 = 0 + 5.5
-1.75y + y2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
-1.75y + y2 = 5.5

The y term is -1.75y.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75y + 0.765625 + y2 = 5.5 + 0.765625

Reorder the terms:
0.765625 + -1.75y + y2 = 5.5 + 0.765625

Combine like terms: 5.5 + 0.765625 = 6.265625
0.765625 + -1.75y + y2 = 6.265625

Factor a perfect square on the left side:
(y + -0.875)(y + -0.875) = 6.265625

Calculate the square root of the right side: 2.503123049

Break this problem into two subproblems by setting 
(y + -0.875) equal to 2.503123049 and -2.503123049.

Subproblem 1

y + -0.875 = 2.503123049 Simplifying y + -0.875 = 2.503123049 Reorder the terms: -0.875 + y = 2.503123049 Solving -0.875 + y = 2.503123049 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + y = 2.503123049 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + y = 2.503123049 + 0.875 y = 2.503123049 + 0.875 Combine like terms: 2.503123049 + 0.875 = 3.378123049 y = 3.378123049 Simplifying y = 3.378123049

Subproblem 2

y + -0.875 = -2.503123049 Simplifying y + -0.875 = -2.503123049 Reorder the terms: -0.875 + y = -2.503123049 Solving -0.875 + y = -2.503123049 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + y = -2.503123049 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + y = -2.503123049 + 0.875 y = -2.503123049 + 0.875 Combine like terms: -2.503123049 + 0.875 = -1.628123049 y = -1.628123049 Simplifying y = -1.628123049

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.378123049, -1.628123049}

See similar equations:

| 9x+3-7=3x-2-8 | | 11-8x=175-36x | | 18z-5=8z+5 | | 17(t-2)+4t=7(3t+4)-10 | | 4x^2-7x=1 | | 5x-51=25 | | 3y-4(2y-3)=-3-2(1-y) | | 5-14=7-42 | | x+2/4=-9 | | 18-2z=6-4z | | 18z-5=10x | | 4z-8=z+4 | | 5(x+3)=5(x+7) | | 21x+1=16x-10 | | 9x+7=6x+49 | | 13x+2=13x-2 | | 1.0(x+30)+1.0=4 | | 7x-4=11x-3 | | x^3+7x^2+6x= | | 5(5x-5)=25(x-1) | | -6(x-3)+(10x)=4(x-1)-10 | | .5x=15-3x | | k^2-9=0 | | 5+15t-4=9t+41-4t | | 35x+10=5(3x+30) | | 19v=4v+45 | | 2(y+3)=y+8 | | x^2+52x+676=0 | | -6y+6=30 | | x^2+52x-676=0 | | 2a^2=5a | | 0.2(x+10)+x=38 |

Equations solver categories