HELp mè:))))))))))))))))))))

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HELp mè:))))))))))))))))))))
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King 4 years 2020-10-16T01:45:36+00:00 2 Answers 91 views 0

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  1. Verity
    0
    2020-10-16T01:46:43+00:00
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    a, $x²-x-12$

    = $x²+3x-4x-12$

    = $x(x+3)-4(x+3)$

    = $(x-4)(x+3)$

    b, $4x²+5x-6$

    = $4x²+2x+3x-6$

    = $2x(2x+1)+3(x-2)$

    c, $5x²+14x-3$

    = $5x²+15x-x-3$

    = $5x(x+3)-(x+3)$

    = $(5x-1)(x+3)$

    d, $6x²+7x-3$

    = $6x²-2x+9x-3$

    = $2x(3x-1)+3(3x-1)$

    = $(2x+3)(3x-1)$

    e, $10x²-4x-6$

    = $10x²-10x+6x-6$

    = $10x(x-1)+6(x-1)$

    = $(10x+6)(x-1)$

    g, $-10x²+28x+6$

    = $-10x²+30x-2x+6$

    = $-10x(x-3)-2(x-3)$

    = $(-10x-2)(x-3)$

    CHÚC BẠN HỌC TỐT

  2. giahung
    0
    2020-10-16T01:47:20+00:00
    Reply

    Đáp án:

     

    Giải thích các bước giải:

     

    help-me

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