2x^2+xy-21y^2=

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


Simplifying
2x2 + xy + -21y2 = 0

Reorder the terms:
xy + 2x2 + -21y2 = 0

Solving
xy + 2x2 + -21y2 = 0

Solving for variable 'x'.

Factor a trinomial.
(x + -3y)(2x + 7y) = 0


Subproblem 1
Set the factor '(x + -3y)' equal to zero and attempt to solve:

Simplifying
x + -3y = 0

Solving
x + -3y = 0

Move all terms containing x to the left, all other terms to the right.

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

Combine like terms: -3y + 3y = 0
x + 0 = 0 + 3y
x = 0 + 3y
Remove the zero:
x = 3y

Simplifying
x = 3y

Subproblem 2
Set the factor '(2x + 7y)' equal to zero and attempt to solve:

Simplifying
2x + 7y = 0

Solving
2x + 7y = 0

Move all terms containing x to the left, all other terms to the right.

Add '-7y' to each side of the equation.
2x + 7y + -7y = 0 + -7y

Combine like terms: 7y + -7y = 0
2x + 0 = 0 + -7y
2x = 0 + -7y
Remove the zero:
2x = -7y

Divide each side by '2'.
x = -3.5y

Simplifying
x = -3.5y
Solution
x = {3y, -3.5y}

See similar equations:

| m/6=3 | | 5s=615 | | 5(3x+4)=40 | | 4.5y=18 | | 8x+2=2x-20 | | -1(2a+3)=2(-4-3) | | -8c+3+(-c+1)= | | (2x+16)+4x=136 | | 0.7j=0.42 | | 5x+25=5 | | 25p=260 | | 8p+-5p+5+-p+-2= | | 3x-12=8x+8 | | 9(t-2)+3t=4(3t+4)-8 | | 0.6m=30 | | 1.8k=7.2 | | y-x=17 | | 2x-5=5+7x-3 | | 7x+5=84 | | 700=35b | | 15=5(w+2) | | 5(x+1)+3x+2=8(x+2)+2x+1 | | -11(B-8)=-3B-5(3B-12) | | 5.6n-7.3=-6.3+6.1n | | -3x+2=-1x+4 | | 2.5x+3=2x | | w+10=8 | | 26=-8(t+2)-6t | | -20-5d=-4d-9 | | 9*9*9*9*9*9*9*9*9*9*9*9*9*9= | | 3.1s=-19.22 | | 9+a+2+(-7a)= |

Equations solver categories