Question

Simplity
(5+√7) (5-
√7)​
hurry please

Answer 1

Answer:

$(5+\sqrt{7})(5-\sqrt{7}) = 18$

Step-by-step explanation:

$(5+\sqrt{7})(5 - \sqrt{7})\\(a + b)(a - b) = a^2 - b^2$

Substituting the numbers in the formula. We get,

$5^2 - (\sqrt{7})^2\\25 - 7\\18$

So, the answer is 18