Question

СРОЧНО ПОМОГИТЕ С АЛГЕБРОЙ,ДАЮ 15

Answer 1

1)
$frac{x^2}{x^2-3xy}: frac{x}{x^2-9y^2} = frac{x^2}{x(x-3y)}* frac{(x-3y)(x+3y)}{x}= \ \ =x+3y \ \ 5+3 sqrt{6}+3(2- sqrt{6} )=5+3 sqrt{6}+6-3 sqrt{6}=11$

2) 9x+7<8x-3
9x-8x< -3-7
x< -10