(root a+root b) (root a- root b)=? (a) a2-b2 (b) a2+b2 (c) a-b (d) a+b
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(root a + root b) (root a - root b) = a^2-b^2
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Answered August 28, 2019 · Author has 376 answers and 79.3K answer views. The square root of a sum is not equal the sum of the square roots. Therefore: sqrt(A + B) says add (A + B) and only then take the square root. For example: sqrt (9 + 16) = sqrt(25) = 5.
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