How do you subtract add and multiply radicals with numbers in front like
4√ 45-√ 75
And 2√ 5+4√ 20
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How do you subtract add and multiply radicals with numbers in front like
4√ 45-√ 75
And 2√ 5+4√ 20
Try breaking the number inside the radical up into a perfect square.
The second one:
See? There is aand 4 is a perfect square. So, we can add it to the other.
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