Which of the following expressions is equivalent to (x + 5)2? O A. (x + 5)(x + 5) + 10(x + 5) OB. (x – 5)(x + 5) + 10(x + 5)

Question

Which of the following expressions is equivalent to (x + 5)2?
O A. (x + 5)(x + 5) + 10(x + 5)
OB. (x – 5)(x + 5) + 10(x + 5)
OC. (x + 5)(x + 5) + 10(x – 5)
OD. (x – 5)(x – 5) + 10(x – 5)

Please someone help me this texts is so important and I need it done by the end of today!

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Khang Minh 6 months 2021-07-26T12:53:08+00:00 1 Answers 0 views 0

Answers ( )

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    2021-07-26T12:54:53+00:00

    Answer:

    B

    Step-by-step explanation:

    Expand (x+5)^2 through binomial expansion and you get x^2+10x+25.

    Break up the problem into little pieces like (x-5)(x+5) and 10(x+5)

    Solve the first piece (x-5)(x+5) by doing something like FOIL.

    x^2-25

    Do the second piece

    10x+50

    When you add them together, it becomes x^2+10x+25, and (x+5)^2=(x-5)(x+5)+10(x+5).

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