Question

Simplify 5 + 20 - 4².
O 21
09
O 17
O 441

Answer 1

Answer:9

Step-by-step explanation:addition and subtraction done in order of appearance. 5+20-16

Answer 2

5 + 20 - 4²

Add 5 and 20 to get 25.

25 - 4²

Calculate 4 to the power of 2.

To calculate a power, multiply the base as indicated by its exponent.

• 4 is the basis
• 2 is the exponent

So 4 is multiplied 2 times, so

• 4 x 4 = 16

25 - 16

Subtract 16 from 25 to get 9.

• 9 ===> Answer

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