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Basic Mathematics QUESTION #4597
Question 1
Expand: $(x - 4)(x + 4)$
  • $x^2 - 16$✔️
  • $x^2 + 16$
  • $x^2 - 8x + 16$
  • $2x$
Correct Answer Explanation
Using $(a-b)(a+b) = a^2 - b^2$: $(x-4)(x+4) = x^2 - 16$