The value of (5 + √2) (5 − √2) is
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(5+root2)(5-root2)
Using the identity,
(a+b)(a-b) = a^2-b^2
(5+root2)(5-root2) = (5)^2 - (root2)^2
= 25-2 = 23
Therefore,
Your answer is 23.
Using the identity,
(a+b)(a-b) = a^2-b^2
(5+root2)(5-root2) = (5)^2 - (root2)^2
= 25-2 = 23
Therefore,
Your answer is 23.
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