Question

Simplify the expression 4(5 - 2)2 – 7.

Answer 1

17

Explanation:

Remember to solve by the order by operations, or PEMDAS. PEMDAS says that when simplifying an expression, you need to solve parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right) in that order.

1) Knowing this, start by solving what's in the parentheses:

`4(5-2)2-7\\= 4 (3)2-7`

2) Then - still following the order of operations - multiply the 4, 3, and 2 together.

`(4)(3)(2)-7\\(24)-7`

3) Finally, subtract 7 from 24.

`24-7\\= 17`

Therefore, 17 is the answer.