2y^2+9=10y

Simple and best practice solution for 2y^2+9=10y 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^2+9=10y equation:


Simplifying
2y2 + 9 = 10y

Reorder the terms:
9 + 2y2 = 10y

Solving
9 + 2y2 = 10y

Solving for variable 'y'.

Reorder the terms:
9 + -10y + 2y2 = 10y + -10y

Combine like terms: 10y + -10y = 0
9 + -10y + 2y2 = 0

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

Divide each side by '2'.
4.5 + -5y + y2 = 0

Move the constant term to the right:

Add '-4.5' to each side of the equation.
4.5 + -5y + -4.5 + y2 = 0 + -4.5

Reorder the terms:
4.5 + -4.5 + -5y + y2 = 0 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + -5y + y2 = 0 + -4.5
-5y + y2 = 0 + -4.5

Combine like terms: 0 + -4.5 = -4.5
-5y + y2 = -4.5

The y term is -5y.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5y + 6.25 + y2 = -4.5 + 6.25

Reorder the terms:
6.25 + -5y + y2 = -4.5 + 6.25

Combine like terms: -4.5 + 6.25 = 1.75
6.25 + -5y + y2 = 1.75

Factor a perfect square on the left side:
(y + -2.5)(y + -2.5) = 1.75

Calculate the square root of the right side: 1.322875656

Break this problem into two subproblems by setting 
(y + -2.5) equal to 1.322875656 and -1.322875656.

Subproblem 1

y + -2.5 = 1.322875656 Simplifying y + -2.5 = 1.322875656 Reorder the terms: -2.5 + y = 1.322875656 Solving -2.5 + y = 1.322875656 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + y = 1.322875656 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + y = 1.322875656 + 2.5 y = 1.322875656 + 2.5 Combine like terms: 1.322875656 + 2.5 = 3.822875656 y = 3.822875656 Simplifying y = 3.822875656

Subproblem 2

y + -2.5 = -1.322875656 Simplifying y + -2.5 = -1.322875656 Reorder the terms: -2.5 + y = -1.322875656 Solving -2.5 + y = -1.322875656 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + y = -1.322875656 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + y = -1.322875656 + 2.5 y = -1.322875656 + 2.5 Combine like terms: -1.322875656 + 2.5 = 1.177124344 y = 1.177124344 Simplifying y = 1.177124344

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.822875656, 1.177124344}

See similar equations:

| 8[x+7m]-3=5 | | 3(v-5)=4(2v-3) | | *-15=4 | | (2x-8)/(2x) | | 5[3+7m]+1=-51 | | 2x-8/2x | | 5[3+7m]+1=51 | | r^2+18r+14=0 | | 6x+4=-2x+37 | | 3+5[8-2x]=-63 | | -7t-(-7)*3+4t=3(7)+3t | | 3ln(9x)=9 | | 1/5*g=9-2/5*g | | 3+5[8-2x]=63 | | -x+3(5)=12 | | x^(2/3)+9x^(1/3)+14=0 | | -7/2y=28 | | -7(t-3)+4t=3(7+2t) | | 3y=51 | | -5/9x=-15 | | x+(x+5)=74 | | 95=5w | | 9,000,000+200,000x=500,000x | | 2x^2-27xy^2=0 | | 49=-7/6u | | 25=-5/3w | | 4x^(2/3)+5=21 | | 51=3u | | 3p+4q=8 | | 4x^3/2+5=21 | | 78=6v | | 1.4-1.6(t+5)=46 |

Equations solver categories