(9z-u)(5z+4u)=

Simple and best practice solution for (9z-u)(5z+4u)= 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 (9z-u)(5z+4u)= equation: 


Simplifying
(9z + -1u)(5z + 4u) = 0

Reorder the terms:
(-1u + 9z)(5z + 4u) = 0

Reorder the terms:
(-1u + 9z)(4u + 5z) = 0

Multiply (-1u + 9z) * (4u + 5z)
(-1u * (4u + 5z) + 9z * (4u + 5z)) = 0
((4u * -1u + 5z * -1u) + 9z * (4u + 5z)) = 0

Reorder the terms:
((-5uz + -4u2) + 9z * (4u + 5z)) = 0
((-5uz + -4u2) + 9z * (4u + 5z)) = 0
(-5uz + -4u2 + (4u * 9z + 5z * 9z)) = 0
(-5uz + -4u2 + (36uz + 45z2)) = 0

Reorder the terms:
(-5uz + 36uz + -4u2 + 45z2) = 0

Combine like terms: -5uz + 36uz = 31uz
(31uz + -4u2 + 45z2) = 0

Solving
31uz + -4u2 + 45z2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-4u + -5z)(u + -9z) = 0


Subproblem 1
Set the factor '(-4u + -5z)' equal to zero and attempt to solve:

Simplifying
-4u + -5z = 0

Solving
-4u + -5z = 0

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

Add '5z' to each side of the equation.
-4u + -5z + 5z = 0 + 5z

Combine like terms: -5z + 5z = 0
-4u + 0 = 0 + 5z
-4u = 0 + 5z
Remove the zero:
-4u = 5z

Divide each side by '-4'.
u = -1.25z

Simplifying
u = -1.25z

Subproblem 2
Set the factor '(u + -9z)' equal to zero and attempt to solve:

Simplifying
u + -9z = 0

Solving
u + -9z = 0

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

Add '9z' to each side of the equation.
u + -9z + 9z = 0 + 9z

Combine like terms: -9z + 9z = 0
u + 0 = 0 + 9z
u = 0 + 9z
Remove the zero:
u = 9z

Simplifying
u = 9z
Solution
u = {-1.25z, 9z}

See similar equations:

| 1/4(12n+36)+9n=-3 | | (x^2+9)*(2x-8)=0 | | 2y-13=7y+12 | | 2x(x+5)=(x-7)(x+5) | | (10+z)/(-3)=2 | | 2=10+z/(-3) | | .08x+.09(x+1000)=1620 | | x-2(x+3)+3(x+4)=4(x+5)-5(-x-6) | | 9+3-2+4=6 | | 5(x+2)+2(x-1)=130 | | (5p)/7-18=-43 | | 2(3x+4)+2=6x+10 | | -3x+15=0 | | 138-8x=9x+15 | | 4+4(x-5)=12X | | (x^2)-(14*x)+(3*y)+(55)=0 | | x+5+3x+4=70 | | x^2-14*x+3*y+55=0 | | 4(t-3)+8=4(2t-6) | | 8x^3+40x^2+8x+40=factor | | x^2-13x+16=-7x+2 | | 5x-7=-2x+4 | | x+5+2x-3=17 | | -4(2x+2)=-8 | | x^2-14x+3y+55=0 | | 42w=2(w+7) | | 5x-7=-2+4 | | (5x-3)+(4x+7)+(2x-6)= | | -7-3=13-7x | | 10x+5=6x+15 | | 3y=2y+3 | | (3k-6)(2k+4k+1)= |

Equations solver categories