Question:

Evaluate each expression if a=-2 and b=3?

by Guest33281  |  earlier

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a)3a^2 - 5b + 8

b)2/3b - 5a

c)2a^3 - 4b^2 + a

d)a + 2b/4 + 4a

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  1. a) 3a^2 = -6^2 =36 - 15 = 21 + 8 = 29

    b) 2/3 x 3 = 6/3 = 2 + 10 = 12

    c) 2a^3 = -4^3 = 64 - 12^2 = 144 -2 = 142

    d) -2 + 6/4 - 8 = -10 + 3/2 = -20/2 + 3/2 = -17/2

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