Question

plz answer this question right ​

Answer 1

Step-by-step explanation:

here

$by \: using \: the \: identity \:( {a -b })^{2} = (a + b)(a - b) \\ \\ here \\ \\ \frac{9}{25} {y}^{2} \times \frac{49}{4} {z}^{2} \\ \\ = ( \frac{ {3}^{5} }{ {5}^{2} } ) \times ( \frac{ {7}^{2} }{ {2}^{2} } ) \\ = (\frac{3}{5} y + \frac{7}{2} z) \times( \frac{3}{5 \: } y - \: \frac{7}{2 \: } z)$

hope it helps ✌