y^2-10y+21=

Simple and best practice solution for y^2-10y+21= 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 y^2-10y+21= equation:


Simplifying
y2 + -10y + 21 = 0

Reorder the terms:
21 + -10y + y2 = 0

Solving
21 + -10y + y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(3 + -1y)(7 + -1y) = 0

Subproblem 1

Set the factor '(3 + -1y)' equal to zero and attempt to solve: Simplifying 3 + -1y = 0 Solving 3 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1y = 0 + -3 -1y = 0 + -3 Combine like terms: 0 + -3 = -3 -1y = -3 Divide each side by '-1'. y = 3 Simplifying y = 3

Subproblem 2

Set the factor '(7 + -1y)' equal to zero and attempt to solve: Simplifying 7 + -1y = 0 Solving 7 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1y = 0 + -7 -1y = 0 + -7 Combine like terms: 0 + -7 = -7 -1y = -7 Divide each side by '-1'. y = 7 Simplifying y = 7

Solution

y = {3, 7}

See similar equations:

| 4x+9=11x-33 | | 3(2n+1)=7(9n+8)+5 | | X2/3+13=17 | | 5.2q-4.3-5.8q=-1.6q-1.4 | | (3y+5)1/2-3=4 | | (6x/x-6)=9+(2x^2/x-6) | | 2n^2+7n+6=0 | | e/-4=9.2 | | 7y+6-2y+9= | | 6-8= | | 5.5x=110 | | a/21=-3 | | -4y+10=-2(4y+11) | | 0.36(18)+0.06=0.18(18+x) | | 4/5c=2 | | z^2+5z-14= | | 1=5x+3 | | 1/5(x-15)-42 | | 34884+3678=n | | 10.2n=30.6 | | 6w=-42 | | 3n-2n-5=0 | | n-1/4=61/2 | | 4x^4-4x=0 | | 24-12x=6+6x | | k-1.3=-9.2 | | 2/x=x+1 | | (4-7i)/(6+5i) | | 24-12x=6+6x-6x | | 2q+4q+4=25 | | 14a-19q= | | 4a+3b-6a+6b= |

Equations solver categories