Evaluate the expression (-3x)^2(-3x)^3?

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  • 1 decade ago
    Favorite Answer

    (-3x)^2(-3x)^3

    Square -3x.

    (9x^2)(-3x)^3

    Cube - 3x

    (9x^2)(-27x^3)

    Multiply both terms.

    -243x^5

  • Anonymous
    1 decade ago

    Let’s do this in as much detail as possible, once and for all, so you can “see” it (with your mind's eye) exactly as you might have done it in your head:

    (-3x)^2(-3x)^3

    [(-3x)^2] [(-3x)^3]

    [(-)(-)(3)(3)(x)(x)] [(-)(-)(-)(3)(3)(3)(x)(x)(x)]

    [(+)(9)(x)(x)] [(-)(+)(27)(x)(x)(x)]

    [(+)(-)(+) (9)(27) (x)(x)(x)(x)(x)]

    [(-) (243) (x^5)]

    -243x^5

  • Anonymous
    1 decade ago

    9x^2 * -27x^3 = -243x^5

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