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\sqrt{80(11)^2+(11)^2
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24 Nov 2021, 06:27
24 Nov 2021, 06:27
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Question Stats:
92% (00:38) correct
7% (01:53) wrong based on 13 sessions
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This question is part of the GRE - Skill Builder Project for a Q170
\(\sqrt{80(11)^2+(11)^2}\)
Show: ::
99
Re: \sqrt{80(11)^2+(11)^2
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24 Nov 2021, 07:44
24 Nov 2021, 07:44
1
\(\sqrt{80(11)^2+(11)^2}\)
\(11\sqrt{81}\)
\(11 * 9 = 99\)
Answer 99
\(11\sqrt{81}\)
\(11 * 9 = 99\)
Answer 99
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\sqrt{80(11)^2+(11)^2
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24 Nov 2021, 09:46
24 Nov 2021, 09:46
1
Carcass wrote:
This question is part of the GRE - Skill Builder Project for a Q170
\(\sqrt{80(11)^2+(11)^2}\)
Show: ::
99
Key property \(\sqrt{xy} = (\sqrt{x})(\sqrt{y})\)
Take: \(\sqrt{80(11^2)+(11^2)}\)
Factor out the \((11^2)\) to get: \(\sqrt{(11^2)(80 + 1)}\)
Simplify: \(\sqrt{(11^2)(81)}\)
Apply the above property to get: \((\sqrt{(11)^2})(\sqrt{81})\)
Evaluate to get: \((11)(9)\), which equals \(99\)
Answer: \(99\)
