Question

What is the simplified form of each expression? (6 + 3)^2 - 4

Answer 1

77

Explanation:

(6 + 3)² is same as (a + b)²

Since (a + b)² = a² + 2ab + b²

Therefore,

(6 + 3)² - 4

= (36 + 36 + 9) - 4

= 81 - 4

= 77

Answer 2

Hi there! Hopefully this helps!

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Answer:
`\boxed{77}`

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Since PEMDAS exists, we will do parentheses "(6+3)" first to get 9.

Then we do the exponent which is:

`9^(2)` = 81.

Then we subtract.

81 - 4 = 77.

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More broken down explanation:

`(6+3)^(2) -4`

Add 6 and 3 to get 9.

`9^(2) - 4` ≈
`77`

Calculate 9 to the power of 2 and get 81.

`81-4` =
`77`

Subtract 4 from 81 to get, you guessed it, 77!