Consider the expression (16−12)^2+5(8+2^2)/5^3−(1+4)^2 . What is the simplified numerator?

100

4^2 + 60

54

76

1 answer

To simplify the expression \((16−12)^2 + 5(8 + 2^2) / 5^3 − (1 + 4)^2\), let's break it down step by step.

  1. Calculate \( (16 - 12)^2 \): \[ 16 - 12 = 4 \implies (4)^2 = 16 \]

  2. Calculate \( 2^2 \): \[ 2^2 = 4 \]

  3. Calculate \( 8 + 2^2 \): \[ 8 + 4 = 12 \]

  4. Calculate \( 5(8 + 2^2) \): \[ 5 \cdot 12 = 60 \]

  5. Calculate \( 5^3 \): \[ 5^3 = 125 \]

  6. Now compute \( \frac{5(8 + 2^2)}{5^3} \): \[ \frac{60}{125} \] To simplify \( \frac{60}{125} \), divide the numerator and denominator by 5: \[ \frac{60 \div 5}{125 \div 5} = \frac{12}{25} \]

  7. Calculate \( (1 + 4)^2 \): \[ 1 + 4 = 5 \implies (5)^2 = 25 \]

  8. Now, combine everything in the original expression: \[ (16 - 12)^2 + \frac{5(8 + 2^2)}{5^3} - (1 + 4)^2 \] becomes: \[ 16 + \frac{12}{25} - 25 \]

  9. Combine the whole numbers: \[ 16 - 25 = -9 \]

  10. The final expression is: \[ -9 + \frac{12}{25} \] To combine these, convert \(-9\) to a fraction with the same denominator: \[ -9 = -\frac{225}{25} \] Thus, we have: \[ -\frac{225}{25} + \frac{12}{25} = \frac{-225 + 12}{25} = \frac{-213}{25} \]

The numerator of the simplified expression is \(-213\).

Therefore, none of the answer choices (100, \(4^2 + 60\), 54, 76) match. The final answer for the numerator of the entire expression is:

\(\text{Numerator: } -213\)

If you specifically meant only to derive the intermediate assertions or match these calculations against provided choices, kindly specify, as the concluding evaluation contradicts available selections.