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20 February, 05:47

If a² + b² = z and ab = y, which of the following is equivalent to 4z + 8y? Show all the steps.

A) (a + 2b) ²

B) (2a + 2b) ²

C) (4a + 4b) ²

D) (4a + 8b) ²

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Answers (2)
  1. 20 February, 06:08
    0
    The answer to your question is: (2a + 2b) ²

    Step-by-step explanation:

    a² + b² = z

    ab = y

    Which is equivalent to 4z + 8y?

    Substitution

    4 (a² + b²) + 8 (ab)

    Simplify 4a² + 4b² + 8ab

    Order 4a² + 8ab + 4b² It's a perfect square trynomial

    Factorize (2a + 2b) ²
  2. 20 February, 06:13
    0
    Answer:A
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