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sqrt9(36)+12(36)+15(36)
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20 Jul 2020, 11:43
20 Jul 2020, 11:43
Expert Reply
00:00
Question Stats:
94% (00:41) correct
5% (00:05) wrong based on 17 sessions
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Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: sqrt9(36)+12(36)+15(36)
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21 Jul 2020, 09:38
21 Jul 2020, 09:38
2
Carcass wrote:
Key property: If \(x \geq 0\), then \(\sqrt{x^2} = x\)
Given: \(\sqrt{9(36)+12(36)+15(36)}\)
Factor out the \(36\) to get: \(\sqrt{36(9 + 12 + 15)}\)
Simplify to get: \(\sqrt{36(36)}\)
In other words: \(\sqrt{36^2}\)
Apply the above property to get: \(36\)
Answer: \(36\)
Cheers,
Brent
Re: sqrt9(36)+12(36)+15(36)
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21 Jul 2020, 09:51
21 Jul 2020, 09:51
Expert Reply
GREAT
More question , of course, in the coming days. Tough ones
Regards
More question , of course, in the coming days. Tough ones
Regards
