how do you solve 8a^2-72=0

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how do you solve 8a^2-72=0

Guest Jul 10, 2015

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Best Answer

+23246

+5

8a² - 72 = 0

Add 72 to both sides:

8a² = 72

Divide both sides by 8:

a² = 9

Find the square root of both sides;

a = 3 or a = -3

geno3141 Jul 11, 2015

1⁺⁰ Answers

+23246

+5

Best Answer

8a² - 72 = 0

Add 72 to both sides:

8a² = 72

Divide both sides by 8:

a² = 9

Find the square root of both sides;

a = 3 or a = -3

geno3141 Jul 11, 2015

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