Answer:
9 and -9
Step-by-step explanation
add 81 to both sides
take square root of both sides
Answer:
-38
Step-by-step explanation:
-38 - 7 = -45
-45 divided by 9 = -5
Answer:
1.2
Step-by-step explanation:
divide 6 by 5
(5c-3)(-5c+7)
Answer = -25c2+50c-21