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20 April, 06:39

What is the value of the expression when x=4 and y=-2?

x² + xy³

__

2

+3
Answers (1)
  1. 20 April, 10:24
    0
    The expression is

    x² + xy³ / 2

    where x = 4 and y = - 2

    putting the values of x and y in the expression we get,

    4² + 4 (-2) ³ / 2 = 16 + 4 (-8) / 2

    = 16 + (-32) / 2

    = - 16/2

    = - 8

    the value of the expression is - 2
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