Factorize the following by splitting the middle term:- (a) 3x^2 +11x+30

Question

Factorize the following by splitting the middle term:-
(a) 3x^2 +11x+30

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Khải Quang 2 weeks 2021-07-22T04:27:23+00:00 1 Answers 1 views 0

Answers ( )

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    2021-07-22T04:28:39+00:00

    Answer:

    See explanation

    Question has been corrected

    Step-by-step explanation:

    Given:

    3x² + 11x + 30

    To factorise, multiply the coefficient of x² by 30

    = 3 * 30

    = 90

    Find two numbers that have a product of 90 and a sum of 11

    ** There are no such two numbers, therefore the question can’t be solved using factorization

    Correcting the error in the question:

    x² + 11x + 30

    To factorise, multiply the coefficient of x² by 30

    = 1 * 30

    = 30

    Find two numbers that have a product of 30 and a sum of 11

    6 and 5

    6 + 5 = 11

    6 * 5 = 30

    x² + 11x + 30

    = x² + 6x + 5x + 30

    = x(x + 6) + 5(x + 6)

    = (x + 6) (x + 5)

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