Question

simplify (√5+√7)(√5-√7)​

Answer 1

using:a²+b²=(a+b)(a-b)

(√5)²-(√7)²

5-7=-2

Answer 2

Answer:

-2

Step-by-step explanation:

(√5-√7)(√5-√7)

(a-b)(a+b) = a^2-b^2

(√5)^2 = 5

(√7)^2 = 7

5-7 = -2 And

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