Question

if a- b√15=4+2√15, then b=?
​

Answer 1

$\huge\underline{AnsWer}$

$a - b \sqrt{5} = 4 + 2 \sqrt{15} \\ or, - b \sqrt{5} = 4 + 2 \sqrt{5} - a \\ or, - b \sqrt{5} = 8.47 - a \\ or, - b = \frac{8.47 - a}{\sqrt{5} } \\ b = -\frac{a - 8.47}{ \sqrt{5} }$

HOPE IT'S HELPFUL ☺️

KINDLY MARK ME AS BRAINLIST