11-01-2016
Mathematics

contestada

Quick help :)
1). Which expression is equal to √72z^2
A).36z √2z
B).6z √2
C).6z √2z
D).6z^2 √2z

2). Which expression is equal to 3√54 - 4√24?
A).-11√6
B).-√6
C).√6
D).11√6

Respuesta :

taskmasters taskmasters

11-01-2016

1) √72z² = 6z √2 B.

2 * 6 * 6 = 72

2) C. √6

3 * 3 √6 - 4 * 2 √6 = 9√6 - 8√6 = √6

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