solve each equation 2x^2-6=42

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19-10-2015
Mathematics

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solve each equation 2x^2-6=42

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AL2006 AL2006 · Answer 1 · 2015-10-19T22:39:46-04:00

You said that 2x² - 6 = 42

Add 6 to each side: 2x² = 48

Divide each side by 2 : x²        = 24

Take the square root of each side:

x = √24

    x = +4.9 (rounded)
   and
x = -4.9 (rounded)