pls help me find the operations of 3a^2+4a^2+7a^2​

Question

pls help me find the operations of 3a^2+4a^2+7a^2​

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Thiên Ân 1 year 2021-08-31T21:30:18+00:00 2 Answers 14 views 0

Answers ( )

    0
    2021-08-31T21:31:21+00:00

    Answer:

    14 a²

    Step-by-step explanation:

    3a² + 4a² + 7a²

    collect like terms

    (3 + 4 + 7)a² .. ( factor out :- a²)

    calculate the sum

    14 a²

    0
    2021-08-31T21:31:57+00:00

    Answer:

    14a^2

    Step-by-step explanation:

    3a^2+4a^2+7a^2

    Combine like terms

    Factor out a^2

    a^2(3+4+7)

    a^2(14)

    14a^2

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