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Multiple choice

What is the conversion of (x - 52) (x - 42) in quadratic form?

  1. x2 - 25 + x2 - 16

  2. x2 - 41x + 400

  3. x2 - 25x - 16x + 2

  4. x2 - 25 + x + 16

  5. x2 + 25 - x + 16

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Expanding (x - 25)(x - 16) = x^2 - 16x - 25x + 400 = x^2 - 41x + 400.

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