Which value of b will make the expression x^2+bx+120 factorable?

Question

Which value of b will make the
expression x^2+bx+120 factorable?

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Minh Khuê 2 months 2021-07-23T13:58:57+00:00 2 Answers 4 views 0

Answers ( )

    0
    2021-07-23T14:00:34+00:00

    Answer:  12 b

    These are the possible sums of the factor pairs of 12 b is the sum of the factors used to multiply to get 12 for the C value. ( x + 1) xx (x + 12) = x^2 + 13 x + 12 ( x – 1) xx (x – 12) = x^2 + (-13) x + 12 (x + 2) xx (x + 6) = x^2 + 8x + 12 (x – 2) xx (x – 6) = x^2 + (-8)x + 1

    0
    2021-07-23T14:00:38+00:00

    Answer:

    Step-by-step expla These are the possible sums of the factor pairs of 12 b is the sum of the factors used to multiply to get 12 for the C value. ( x + 1) xx (x + 12) = x^2 + 13 x + 12 ( x – 1) xx (x – 12) = x^2 + (-13) x + 12 (x + 2) xx (x + 6) = x^2 + 8x + 12 (x – 2) xx (x – 6) = x^2 + (-8)x + 1

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