Question

решите срочно надо!!!​

Answer 1

$1); ; frac{4x+6}{1,8-0,4x}\\1,8-0,4xne 0; ; to ; ; xne 4,5; ; ,\\xin (-infty ;; 4,5)cup (4,5, ;+infty )\\\2); ; frac{2x-1}{49-x^2}\\49-x^2ne 0; ; to ; ; xne pm 7\\xin (-infty ,-7)cup (-7,7)cup (7,+infty )$