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√(5a) + 2√(80a) - 7√(125a)

first square the whole equation

[√(5a)]2 + [2√(80a)]2 - [7√(125a)]2

when you square a sqrt the sqrt goes away

5a + 4 * 80a - 49 * 125a

dont forget to square the numbers outside the sqrts

5a + 320a - 6125a

just add and subtract

-5800a is your answer

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13y ago
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Q: How do you solve this sqrt5a plus 2sqrt80a minus 7sqrt125a?
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