Question

Разложите на множители:
$2sqrt{b}$ + $10sqrt{a}$ - $sqrt{ab}$ - 5a

Answer 1

= ( 2√b + 10√a ) - ( √ab + 5a ) = 2( √ b + 5√a ) - √a( √b + 5√a ) =
= ( 2 - √ a )( √b + 5√a )