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19 December, 03:30

Find the value of the expression 4a4 - 2b2 + 40 when a = 2 and b = 7.

a. 6

b. 39

c. 74

d. 202

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Answers (1)
  1. 19 December, 03:53
    0
    Hi there

    All you have to do is replace a by 2 and b by 7 and solve it.

    4 (2) ^4 - 2 (7^2) + 40

    4 (16) - 2 (49) + 40

    64 - 98 + 40

    -34 + 40

    = 6

    Answer : A

    Good luck!
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