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Math

posted by on .

I want to know did I work these problems right

Multiply: ( - 6)² - 4² = 36 – 16 = 20

Multiply
( - 3) ( - 6 ) + ( 4 ) ( -2) = 18 + ( -8) = 18-8= 10

Multiply: ( - 3 ) ³ - ( - 8) ( -2) =
(-3) times 3 = -9
(-8) times (-2) = 16
-9 - 16 = -25

-25

Multiply: -9 ² - ( -6)² = 81-36= 45

  • Math - ,

    The first two are OK. The third is not. The fourth has the wrong sign.

    "Multiply": ( - 3 )³ - ( - 8) ( -2) =
    The superscript 3 is an exponent.
    ( - 3 )³ = (-3)(-3)(-3) = -27
    Subtract 16 from that.

    Why do you start each operation with the word "multiply"? There are also other operaions involved (adding, subtracting and taking exponents)

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