The order of operations is:
Parentheses, Exponent, Division, Multiplication, Addition, Subtraction.
Or PEMDAS.
hope it helps!
Answer:
-1
Step-by-step explanation:
20 / -1 = -20
The correct answer is SSS
Recognize the differnce of 2 perfect squares
a²-b²=(a-b)(a+b)
so