Use "PEMDAS" (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) to know what to do first.
(15 + 6)^{2} - (8 - 5)^{2} Solve the insides of the parentheses
21^{2} - 3^{2} Solve the exponents (21 x 21) and (3 x 3)
441 - 9 Subtract
432
X=155 y=19.86
Is you multiply it by 15 each you get this
Answer:a rotation of 90° followed by a reflection over the y-axis
Step-by-step explanation:
Both. They're both used all the time, sometimes the question is in radians and other times its in degrees. Mine is mostly on degrees though.
