Yes, you can add or subtract under the radical.
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No, you cannot add or subtract under the radical. The radical represents the square root function, and it only operates on the number or expression that is inside the radical. To add or subtract, you need to simplify the expressions inside the radical first.
similar-a similar radicand is to add or subtract similar radicals we simply add and subtract there coefficients and Anex to the sum of their common radical part.
false , i tried it on apex so its right
Similar radicalssuch as ... 5(sq root 7) + 3(sq root 7) are similar because the radical has the same root index and the same number inside the radical. Like variables they can have different coefficients. 2x and 5x are similar ( called like terms) add the coefficients. 2x + 5x = 7x similarly 5(sq root 7) + 3(sq root 7) = 8(sq root 7)
The opposite of add is subtract.
In surd form, square roots need to be have the same radical term before you can add or subtract them. However, unlike in algebraic expressions, it is possible to add or subtract square roots using approximate (decimal) values.