Question

ввыполните умножение!​

Answer 1

$\dfrac{7x^2}{45y^5} *\dfrac{90y^6}{49x^3} =\dfrac{7x^2}{45y^5} *\dfrac{2*45y^5*y}{7*7x^2*x} =\dfrac{1}{1} *\dfrac{2*y}{7*1x} =\dfrac{2y}{7x}$

Answer 2

7x² 90y6 2•45y5•y 1

———– • –––– = –---------- = — •

45y5 49x³ 7•7x²•x 1

2• y 2y

------ = —-

7•1x 7x