Question

(5 - root 7 ) (5+2 root 7)
simplify​

Answer 1

Step-by-step explanation:

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

$= 25 + 10 \sqrt{7} - 5 \sqrt{7} - 14$

$= 11 + 5 \sqrt{7}$

Answer 2

Answer:

(5-√7)(5+2√7)

= 25+10√7-5√7-14

= 11+5√7