​ Find the following products: (i) (3/x - 5/y)(9/x^2 + 25/y^2+15/xy)

Question

Find the following products:

(i) \((\frac{3}{x}-\frac{5}{y})\)\((\frac{9}{x^2}+\frac{25}{y^2}+\frac{15}{xy})\)

(ii) \((3+\frac{5}{x})\)\((9-\frac{15}{x}+\frac{25}{x^2})\) 

(iii) \((\frac{2}{x}+3x)\)\((\frac{4}{x^2}+9x^2-6)\) 

(iv) \((\frac{3}{x}-2x^2)\)\((\frac{9}{x^2}{+4x^2-6x})\)

Answer 1

(i)

(ii)

(iii)

(iv)