Question

11+4 (x+7) 2nd power when x=2

Answer 1

11+4 (x+7)^2
Substitue 2 for x
11+4 (2+7)^2
Multiply the numbers inside of the parenthesis by the exponent
11+4 (4+49)
Add 4 to 59
11+4 (54)
Add 4 to 11
15(54)
Multiply
Final Answer: 810

Answer 2

First you follow PEMDAS, doing the parentheses first. Inside the parenthesis, there is 9. 9^2 is 81. Then you multiply 15 by 81, and you get 1215. Final answer 1215