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15 July, 08:49

Evaluate the expression 3 (x-1) 2nd power + 2x-7 for x=3

What is the first step for evaluating this expression?

Substitute 3 for X

distribute the 3

combine like terms

+5
Answers (1)
  1. 15 July, 12:09
    0
    11

    3Step-by-step explanation:

    Given

    3 (x - 1) ² + 2x - 7 ← substitute x = 3 into the expression

    = 3 (3 - 1) ² + 2 (3) - 7

    = 3 (2) ² + 6 - 7

    = 3 (4) - 1

    = 12 - 1

    = 11
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