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Saturday, February 21, 2009

...........All about on the ADDITION AND SUBTRACTION of Radicals..............

Hello Ma'am!!!!!!!!!!
This is my blog for the addition and subtraction of radicals.............

hhhhhhhhheeeeeeeeewwwwwwwww................. This lesson
is a little hard for me..........But I'm trying to
understand this very well so I can get a high
on our 4th periodical test and on the NAT...

4/5 + 3/7
Since the radicals are not the same, and both are in their simplest form, there is no way to combine them. The answer is the same as the problem.

Warning: If the radicals in your problem are different, be sure to check to see if the radicals can be simplified. Often times, when the radicals are simplified, they become the same radical and can then be added or subtracted. Always simplify, if possible, before deciding upon your answer

if the radical parts, after reduction, are different or have different exponents, they cannot be united in the same term; and must he added by writing them one after the other.
The sum of 3√b and 2√a, is 3√b + 2√a.

It is manifest that three times the root of b, and twice the root of a, are neither five times the root of b, nor five times the root of a, unless b and a are equal.
The sum of √a and 3√a, is √a + 3√a.

The square root of a, and the cube root of a, are neither twice the square root, nor twice the cube root of a.

272. Subtraction of radical quantities is to be performed in the same manner as addition, except that the signs in the subtrahend are to be changed according to Art. 81.
From √ay 3h1/3 -a-1/n
Sub. 3√ay -5h1/3 -2a-1/n
Diff. -2√ay 8h1/3 a-1/n

From √50, subtract √8. Ans. 5√2 - 2√2 = 3√2. (Art. 270.)
From 3√b4y subtract 3√by4. Ans. (b - y).3√x.
From n√x, subtract 5√x.

That's all for this lesson.............
GOD BLESS!!!!!!!!!!!!!!!

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