2y^2-4=7y

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


Simplifying
2y2 + -4 = 7y

Reorder the terms:
-4 + 2y2 = 7y

Solving
-4 + 2y2 = 7y

Solving for variable 'y'.

Reorder the terms:
-4 + -7y + 2y2 = 7y + -7y

Combine like terms: 7y + -7y = 0
-4 + -7y + 2y2 = 0

Factor a trinomial.
(-1 + -2y)(4 + -1y) = 0

Subproblem 1

Set the factor '(-1 + -2y)' equal to zero and attempt to solve: Simplifying -1 + -2y = 0 Solving -1 + -2y = 0 Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2y = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2y = 0 + 1 -2y = 0 + 1 Combine like terms: 0 + 1 = 1 -2y = 1 Divide each side by '-2'. y = -0.5 Simplifying y = -0.5

Subproblem 2

Set the factor '(4 + -1y)' equal to zero and attempt to solve: Simplifying 4 + -1y = 0 Solving 4 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1y = 0 + -4 -1y = 0 + -4 Combine like terms: 0 + -4 = -4 -1y = -4 Divide each side by '-1'. y = 4 Simplifying y = 4

Solution

y = {-0.5, 4}

See similar equations:

| (3y+5)(3y+5)+(y-4)(y-4)=6y(6y) | | 7-2(-9h-3)= | | -3k-1=-3-4k | | 4x^3+8x^2+10x=0 | | 8-1(4x+1)=5(x+6)-2 | | F(x)=15+3-4 | | 3(3.14)=12(3.14) | | 25q-10=14q-76 | | -13v-6=5v^2 | | 12x-4=7x+1 | | 6(z+2)=3(8z+4) | | 9+15=6 | | 8+15q-20=10q-3q-84 | | 2.5(t-5)-6=9 | | -252=6(8x-2) | | 23=9-2b | | 9+2.7=-4.8-6 | | (4x+2)2=4 | | 3y+1x=4 | | 5.24-.06(x+9)=.04 | | 8(1-5x)=288 | | 9+3x+1=8x | | X-x=-6-3x | | 10-3(4-x)+12x-18=7x+22 | | 80=2x+2(x-1) | | 20=25t-5t^2 | | 11-x=3y+1 | | 3(2(X-7.50))-4= | | (2+z)(5z+6)=0 | | 4(2x+3)-8x=3x-12 | | (4y-z)(2y+7z)= | | y^2+2=66 |

Equations solver categories