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Simplify the expression completely.

-3sqrt64-sqrt(-9)+2sqrt16
Answer:

Simplify the expression completely.\newline3649+216 -3 \sqrt{64}-\sqrt{-9}+2 \sqrt{16} \newlineAnswer:

Full solution

Q. Simplify the expression completely.\newline3649+216 -3 \sqrt{64}-\sqrt{-9}+2 \sqrt{16} \newlineAnswer:
  1. Question Prompt: Question prompt: Simplify the expression completely.\newline3649+216-3\sqrt{64} - \sqrt{-9} + 2\sqrt{16}
  2. Simplify Square Root of 6464: Simplify the square root of 6464. The square root of 6464 is 88 because 82=648^2 = 64. 364-3\sqrt{64} becomes 3×8-3 \times 8.
  3. Calculate Product of 3-3 and 88: Calculate the product of 3-3 and 88.\newlineMultiplying 3-3 by 88 gives 24-24.\newline3×8=24-3 \times 8 = -24.
  4. Simplify Square Root of 9-9: Simplify the square root of 9-9. The square root of 9-9 is not a real number; it is an imaginary number. The square root of 99 is 33, and since we are taking the square root of a negative number, we use the imaginary unit ii. 9\sqrt{-9} becomes 3i3i.
  5. Simplify Square Root of 1616: Simplify the square root of 1616.\newlineThe square root of 1616 is 44 because 42=164^2 = 16.\newline2162\sqrt{16} becomes 2×42 \times 4.
  6. Calculate Product of 22 and 44: Calculate the product of 22 and 44.\newlineMultiplying 22 by 44 gives 88.\newline2×4=82 \times 4 = 8.
  7. Combine Simplified Terms: Combine all the simplified terms.\newlineCombine 24-24 (from Step 22), 3i3i (from Step 33), and 88 (from Step 55).\newlineThe expression becomes 243i+8-24 - 3i + 8.
  8. Add 24-24 and 88: Add 24-24 and 88.\newlineAdding 24-24 and 88 gives 16-16.\newline24+8=16-24 + 8 = -16.
  9. Write Final Expression: Write the final simplified expression.\newlineThe final expression is 163i-16 - 3i.

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