Simplify 30 40 - JAMB Mathematics 2015 Question
Simplify √30 × √40
A
10 √3
B
5 √3
C
20 √3
D
15 √3
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Correct Option: C
√30 × √40
√(30 × 40)
√(3 × 10 × 4 × 10)
√(400 × 3)
√400 × √3
20 × √3
20√3
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