DASAROLLA: a) (x+3) (x+5)= b) (x+4) (x-5)=​

Question

DASAROLLA:

a) (x+3) (x+5)=

b) (x+4) (x-5)=​

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Thông Đạt 2 months 2021-07-23T17:57:12+00:00 1 Answers 1 views 0

Answers ( )

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    2021-07-23T17:58:52+00:00

    Answer:

    a)x^{2}+8x+15

    b)x^{2}-x-20

    Step-by-step explanation:

    a) (x+3)(x+5)

    a)x^{2}+5x+3x+15

    a)x^{2}+8x+15

    b) (x+4)(x-5)

    b) x^{2}-5x+4x-20

    b)x^{2}-x-20

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