taylorarrington taylorarrington

20-10-2015
Mathematics

contestada

solve each equation 2x^2-6=42

Respuesta :

20-10-2015

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)

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