Question

Evaluate this exponential expression

3(5+4)^2-4^2

Answer 1

227

Explanation:

Be sure to use the correct order of operations. Do the addition in parentheses first. Then do the exponents. Then do the multiplication, and finally do the subtraction

3(5+4)² - 4² =

= 3(9)² - 4²

= 3 × 81 - 16

= 243 - 16

= 227