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1 vote
Solve usng square roots5x^2-15=20

User Carron
by
7.4k points

1 Answer

5 votes

Answer:

x = ±
√(7)

Explanation:

given

5x² - 15 = 20 ( add 15 to both sides )

5x² = 35 ( divide both sides by 5 )

x² = 7 ( take square root of both sides )


√(x^2) = ±
√(7) , that is

x = ±
√(7)

User Marcus Noon
by
7.9k points
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