Answer:
x=-12
Step-by-step explanation:
x2-36=5x
add 36 to both sides
x2=5x+36
subtract 5x from both sides
x(-3)=36
divide both sides by -3
substitute to prove right
(-12)2-36=5(-12)
-24-36=-60
-60=-60
X = -12
take away 2x from both sides
-36=3x
divide both sides by 3
