(z-7)(z-2)=0

Simple and best practice solution for (z-7)(z-2)=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 (z-7)(z-2)=0 equation:


Simplifying
(z + -7)(z + -2) = 0

Reorder the terms:
(-7 + z)(z + -2) = 0

Reorder the terms:
(-7 + z)(-2 + z) = 0

Multiply (-7 + z) * (-2 + z)
(-7(-2 + z) + z(-2 + z)) = 0
((-2 * -7 + z * -7) + z(-2 + z)) = 0
((14 + -7z) + z(-2 + z)) = 0
(14 + -7z + (-2 * z + z * z)) = 0
(14 + -7z + (-2z + z2)) = 0

Combine like terms: -7z + -2z = -9z
(14 + -9z + z2) = 0

Solving
14 + -9z + z2 = 0

Solving for variable 'z'.

Factor a trinomial.
(2 + -1z)(7 + -1z) = 0

Subproblem 1

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

Subproblem 2

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

Solution

z = {2, 7}

See similar equations:

| (9.63*204)-(11*204)= | | 9=15/f=90 | | (y+1)(y-7)=0 | | 5x+2(x-3)=43 | | 5f-7=-6f-29 | | 15.5+2.5= | | 5ysquared-6y-8= | | 320-12(9.63)= | | 105-u=247 | | k=9/90 | | 5b-10=14-3b | | 5y+4x=6+2xy | | 9=k*90 | | 8x+24=144 | | 2x+16=-3x+-9 | | F(4)=4-3 | | 2x+4(x+1)=28 | | (4x-1/16)=(2x-3/8) | | 9/90=x/15 | | 80=-5v | | 2x^2-41x+209=0 | | r+19=3 | | 1.7x-8=0.5x-2 | | x^2=14+36 | | 4x-1/16=2x-3/8 | | -4v(v-2)=-4(v-8)-8v | | -1+m=-4 | | -17=-32-3/5x | | 10x+21=13x | | -16a=-6 | | 3x+2(x+4)=28 | | -(c+4)+5=4x+1-5x |

Equations solver categories