Question

Решите неравенство
(х-6)(4х+7)/9-х≤0

Answer 1

$frac{(x-6)(4x+7)}{9-x} leq 0 \ \ frac{(x-6)(x+frac{7}{4} )}{9-x} leq 0 \ \ x>9 \ \ - frac{7}{4} leq x leq 6$