Written on July 28, 2021, 10:35 p.m.
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Answer of this question
How to solve (√8-√9)(√8+√9)
(√8-√9)(√8+√9) .. See here this can be done by using the formulae (a+b)(a-b) = a^2 - b^2 the ans can calculated by (√8)^2 - (√9)^2 = 8-9 =-1
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