After one side of a square was enlarged by 2 inches and the other side was enlarged by 3 inches, the area of the shape was doubled.

Question

After one side of a square was enlarged by 2 inches and the other side was enlarged
by 3 inches, the area of the shape was doubled.
What was the side of the square?

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Doris 5 years 2021-07-27T12:56:09+00:00 1 Answers 52 views 0

Answers ( )

  1. ngockhue
    0
    2021-07-27T12:57:40+00:00
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    Answer:

    6 inches

    Step-by-step explanation:

    basically, first write an equation

    2x^2 = x^2 + 5x + 6

    then simplify this into

    x^2 = 5x + 6

    then use sum-product pattern and factor

    (x – 6)(x + 1) = 0

    then split into two equations

    x – 6 = 0, x + 1 = 0

    so, you have x = 6 and x = -1

    because it can’t be negative, 6 is your answer

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )