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McGraw Hill Integrated II, 2012 View details

1. Solving Quadratic Equations by Factoring

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Exercise 102 Page 177

If sqrt(a) and sqrt(b) are real numbers, then sqrt(a)*sqrt(b)=sqrt(ab).

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Practice makes perfect

The rule regarding multiplying radical expressions states: "If sqrt(a) and sqrt(b) are real numbers, then sqrt(a)*sqrt(b)=sqrt(a b)." sqrt(8)* sqrt(32)=sqrt(8* 32) = sqrt(256) Notice that 256 is a perfect square, so we can easily calculate the root.

sqrt(256)

CalcRoot

Calculate root

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