Question

(-27/5xy²z) (20/21x²y²z²-3z),when x=1/2,y=-1,and z=2.​

Answer 1

Answer:

Dude your answer is -432/21.

Step-by-step explanation:

{ -27/ 5×(1)×(-1)²×(2) } { 20/21×(1)²×(-1)²×(2)² - 3(2) }

{-27/5×1×1×2} {20/21×1×1×4-6 }

{ 27/5×2 } { 20/21 ×(-2) }

{ 54/5 } × { -40/21 }

{ 54/5 × (-40/21) }

{ (-2160/105) }

{ -432/21}

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