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27 September, 06:06

Solve the question 2 (3x plus 5) Square - 16 = 0 buy completing the square

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  1. 27 September, 06:17
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    1/3 (4√2/2 - 5)

    -1/3 (4√2/2 + 5)

    Step-by-step explanation:

    2 (3x+5) ² - 16=0

    2 (3x+5) ²=16

    (3x+5) ² = 4²/2

    3x+5 = 4/√2 ⇒ 3x = 4/√2 - 5 ⇒ x = 1/3 (4√2/2 - 5)

    3x+5 = - 4√2 ⇒ x = - 1/3 (4√2/2 + 5)
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