4y^2-12y+7=0

Simple and best practice solution for 4y^2-12y+7=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 4y^2-12y+7=0 equation:


Simplifying
4y2 + -12y + 7 = 0

Reorder the terms:
7 + -12y + 4y2 = 0

Solving
7 + -12y + 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'.
1.75 + -3y + y2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + -3y + -1.75 + y2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + -3y + y2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + -3y + y2 = 0 + -1.75
-3y + y2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
-3y + y2 = -1.75

The y term is -3y.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3y + 2.25 + y2 = -1.75 + 2.25

Reorder the terms:
2.25 + -3y + y2 = -1.75 + 2.25

Combine like terms: -1.75 + 2.25 = 0.5
2.25 + -3y + y2 = 0.5

Factor a perfect square on the left side:
(y + -1.5)(y + -1.5) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(y + -1.5) equal to 0.707106781 and -0.707106781.

Subproblem 1

y + -1.5 = 0.707106781 Simplifying y + -1.5 = 0.707106781 Reorder the terms: -1.5 + y = 0.707106781 Solving -1.5 + y = 0.707106781 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + y = 0.707106781 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + y = 0.707106781 + 1.5 y = 0.707106781 + 1.5 Combine like terms: 0.707106781 + 1.5 = 2.207106781 y = 2.207106781 Simplifying y = 2.207106781

Subproblem 2

y + -1.5 = -0.707106781 Simplifying y + -1.5 = -0.707106781 Reorder the terms: -1.5 + y = -0.707106781 Solving -1.5 + y = -0.707106781 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + y = -0.707106781 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + y = -0.707106781 + 1.5 y = -0.707106781 + 1.5 Combine like terms: -0.707106781 + 1.5 = 0.792893219 y = 0.792893219 Simplifying y = 0.792893219

Solution

The solution to the problem is based on the solutions from the subproblems. y = {2.207106781, 0.792893219}

See similar equations:

| (2w-3)w=44 | | (6x+10)(9)=144 | | -3x+6=-5x-2 | | 23y+6=7 | | 4x+-2x+3=15 | | P=150s+500 | | (.75s)+2=14 | | 8x-2=10-3x | | .5m=3 | | 8x(x)+9(x)= | | (6x+1+9)(9)=12(12) | | 8x(x)= | | 4/3x-12=16 | | 4-6/2= | | lne^6x=5 | | (-6+5i)-(-3+9i)= | | 1/3d=9 | | (4x+27)(27)=45(45) | | 20-6x=-22 | | (6x)*5=80 | | (-2)4x+2over(-2)2x=(-2)12 | | (6x)x(5x)=80 | | 7-5/8 | | (2x+1)+x+2x=126 | | 24(y+2)=4(5y+6) | | 18x^2+45x-36/9x | | (3-2i)(-5-9i)= | | 9x-(3x+9)=3x-12 | | -8c-24= | | 1/2(8-6y)+1/5(-10y-25) | | 21/5/7/40 | | 5x+9=9-3x |

Equations solver categories