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guajiro [1.7K]
3 years ago
9

Combine and simplify these radicals. √8* √ 20

Mathematics
2 answers:
guapka [62]3 years ago
8 0

Answer:

4√10

Step-by-step explanation:

√(8) √(20)

= √(8 x 20)

= √(160)

= √(16 x 10)

= √(16) x √(10)

= 4 x √10

= 4√10

Natasha2012 [34]3 years ago
4 0

Answer:

4\sqrt{10}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

Given

\sqrt{8} × \sqrt{20}

= \sqrt{8(20)}

= \sqrt{160}

= \sqrt{16(10)}

= \sqrt{16} × \sqrt{10}

= 4\sqrt{10}

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