Question

Simplify (4+√7)(4−√7) /√11

Answer 1

Answer:

$you \: know... \\ (x + y)(x - y) = {x}^{2} - {y}^{2} \\ \\ \\ = \geqslant \frac{(4 + \sqrt{7})(4 - \sqrt{7} )}{11} \\ \\ \\ = > \frac{16 - 7}{11} = > \frac{9}{11}$

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Answer 2

Step-by-step explanation:

(16-7)/√11

9/√11

9x11^-1/2