Question

Simplify the expression 8^2-[7(4+5)]

Answer 1

Greetings!

To simply this expression, we have to follow our Order of Operations using the mnemonic, PEDMAS:

P→ Parenthesis (Complete everything inside the brackets)

E→ Exponents

D→ Division

M→ Multiplication

A→ Addition

S→ Subtraction

Let's try to the simply the expression now:

`=8^2-(7(4+5))`

Complete the the addition within the innermost parenthesis:

`=8^2-(7(9))`

Multiply the terms within the parenthesis:

`=8^2-(63)`

Find the exponent of 2 in 8:

`=64-(63)`

Subtract the remaining terms:

`=1`

The Simplified form of this Expression is:

`\boxed{=1}`

I hope this helped!

-Benjamin