Consider the expression (16−12)exponent2+5(8+2exponent2)/5exponent3−(1+4)exponent2

. What is the simplified numerator?(1 point)
Responses

100

4exponent2 + 60

54

76

1 answer

Let's simplify the expression step-by-step:

  1. Start with the expression:
    \((16 - 12)^{2} + 5(8 + 2^{2})/5^{3} - (1 + 4)^{2}\)

  2. Calculate each part:

    • \(16 - 12 = 4\)
      Thus, \((16 - 12)^{2} = 4^{2} = 16\)

    • \(2^{2} = 4\)
      Thus, \(8 + 2^{2} = 8 + 4 = 12\)

    • Now calculate \(5(12)/5^{3}\):

      • First, \(5^{3} = 125\)
      • Then \(5(12) = 60\)
      • Now, \(5(8 + 2^{2})/5^{3} = 60/125 = \frac{60}{125} = \frac{12}{25}\)
    • Lastly, \((1 + 4)^{2} = 5^{2} = 25\)

  3. Now substitute these calculated values back into the expression:

    \[ 16 + \frac{12}{25} - 25 \]

  4. Combine the terms:

    • Convert \(16\) and \(-25\) into fractions with a common denominator of \(25\):
      • \(16 = \frac{400}{25}\)
      • \(-25 = -\frac{625}{25}\)

    So we have: \[ \frac{400}{25} + \frac{12}{25} - \frac{625}{25} = \frac{400 + 12 - 625}{25} = \frac{-213}{25} \]

  5. The numerator of the simplified expression is \(-213\), but since we are asked for the numerator from a selection of responses, it appears they might be focusing on a different part of the expression.

Now looking at the responses:

  • 100
  • \(4^{2} + 60\)
  • 54
  • 76

The part \(4^{2} + 60\) gives us: \[ 4^{2} = 16 \implies 16 + 60 = 76 \]

Thus, the simplified numerator is: \[ \boxed{76} \]