(t+9)(t-9)=0

Simple and best practice solution for (t+9)(t-9)=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 (t+9)(t-9)=0 equation:


Simplifying
(t + 9)(t + -9) = 0

Reorder the terms:
(9 + t)(t + -9) = 0

Reorder the terms:
(9 + t)(-9 + t) = 0

Multiply (9 + t) * (-9 + t)
(9(-9 + t) + t(-9 + t)) = 0
((-9 * 9 + t * 9) + t(-9 + t)) = 0
((-81 + 9t) + t(-9 + t)) = 0
(-81 + 9t + (-9 * t + t * t)) = 0
(-81 + 9t + (-9t + t2)) = 0

Combine like terms: 9t + -9t = 0
(-81 + 0 + t2) = 0
(-81 + t2) = 0

Solving
-81 + t2 = 0

Solving for variable 't'.

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

Add '81' to each side of the equation.
-81 + 81 + t2 = 0 + 81

Combine like terms: -81 + 81 = 0
0 + t2 = 0 + 81
t2 = 0 + 81

Combine like terms: 0 + 81 = 81
t2 = 81

Simplifying
t2 = 81

Take the square root of each side:
t = {-9, 9}

See similar equations:

| (x+9)(t-9)=0 | | (x+9)(t-9)=9 | | (-2-32)0.53=x | | -21p=-231 | | -11q=-99 | | 1x-3x=85 | | (x-22)(x-22)=18 | | 2a-5=(-3a) | | 8k^2-51k+18=0 | | (x+2)(x-6)=0 | | 2(2t-2)(3t+5)=0 | | 8x^3+14x^2-30x=0 | | 1-3x=85 | | 2+10x+(9-6x)=19(6x) | | 15x-40=23-8x | | 9v^2+27v+8=0 | | (8x+33)+(7x+27)=180 | | (4x-8)(7x+21)=0 | | 9y-5(1+y)=2(2y-2) | | N-15=3*4 | | z-34=48 | | 5p^2-39p-8=0 | | (2x-7)+x=110 | | 3x+46=1+8x | | x^2=2x-15 | | 10-2y=20 | | 3q+-5q=-12 | | X^2-144=25 | | 3n+1=7n-5 | | 3n+2=-10 | | 3y-y=18 | | 3y+2x=15 |

Equations solver categories