Question

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

Answer 1

Answer:

77

Step-by-step 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!