Solve Using the Square Root Property x^2-12x-45=0

Math
x2-12x-45=0
Factor x2-12x-45 using the AC method.
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Consider the form x2+bx+c. Find a pair of integers whose product is c and whose sum is b. In this case, whose product is -45 and whose sum is -12.
-15,3
Write the factored form using these integers.
(x-15)(x+3)=0
(x-15)(x+3)=0
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
x-15=0
x+3=0
Set the first factor equal to 0 and solve.
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Set the first factor equal to 0.
x-15=0
Add 15 to both sides of the equation.
x=15
x=15
Set the next factor equal to 0 and solve.
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Set the next factor equal to 0.
x+3=0
Subtract 3 from both sides of the equation.
x=-3
x=-3
The final solution is all the values that make (x-15)(x+3)=0 true.
x=15,-3
Solve Using the Square Root Property x^2-12x-45=0

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