Question

Simplify : 4 (5 + 9√2) (3 - √7)​

Answer 1

Answer:

$4( 5 + 9 \sqrt{2} )(3 - \sqrt{7} )$

$= (20 + 36 \sqrt{2} )(12 - 4 \sqrt{7} )$

$= 24 - 80 \sqrt{2} + 144 \sqrt{14}$

$= 24 + 64 \sqrt{28}$