Question

(√7+√5) (√5-√7) Who Comple these question
​

Answer 1

Answer:

-2

Step-by-step explanation:

(√7+√5)(√5-√7)=(√5)^2-(7)^2=5-7=-2

Answer 2

Answer:

$\sqrt{7} \times ( \sqrt{5} - \sqrt{7} ) + \sqrt{5} ( \sqrt{5} - \sqrt{7} ) \\ \sqrt{35} - 7 + 5 - \sqrt{35 } \\ \sqrt{35} - \sqrt{35} - 7 + 5 \\ -2$