Question

(9-5√3) (7+√2) find the value of a+b√2​

Answer 1

Answer:

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

$63 - 35 \sqrt{2} + 9 \sqrt{2} - 10 =$

$53 - 26 \sqrt{2} = a + b \sqrt{2}$

so a =53 & b = -26