Write a radical in which the radicand consists of a coefficient and a variable. Use a coefficient that can be simplified best using the greatest perfect square method. Then, simplify the radical completely. You can use "sqrt()" to show a square root. For example, can be written as 7sqrt(a).
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OpenStudy (anonymous):
@jim_thompson5910 , can you help again ?
jimthompson5910 (jim_thompson5910):
Think of any number you want
jimthompson5910 (jim_thompson5910):
Which number comes to mind
OpenStudy (anonymous):
10 ?
jimthompson5910 (jim_thompson5910):
How about we double that to 20 (since that works better)
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jimthompson5910 (jim_thompson5910):
now let's use the variable x
jimthompson5910 (jim_thompson5910):
So let's simplify
\[\Large \sqrt{20x}\]
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\[\Large \sqrt{20x}\]
\[\Large \sqrt{4*5x}\]
\[\Large \sqrt{4}*\sqrt{5x}\]
\[\Large 2\sqrt{5x}\]
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So
\[\Large \sqrt{20x}\]
simplifies to
\[\Large 2\sqrt{5x}\]
jimthompson5910 (jim_thompson5910):
Do you see how I'm doing this?
OpenStudy (anonymous):
Yes, thanks
jimthompson5910 (jim_thompson5910):
alright great
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