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20 December, 20:41

Use the Perfect Square Trinomial and provide the first step to calculating 42^2 without a calculator.

(46 - 4) 2

(46 + 4) 2

(40 - 2) 2

(40 + 2) 2

+4
Answers (2)
  1. 20 December, 22:47
    0
    Answer: D) (40+2) 2

    I got it right on my test
  2. 20 December, 23:50
    0
    1764

    Step-by-step explanation:

    (40 + 2) ²

    40² + 2 (40) (2) + 2²

    1600 + 160 + 4

    1764

    (46 - 4) ²

    46² - 2 (46) (4) + 4²

    2116 - 368 + 16

    1764
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