Question

please answer these 2 also​

Answer 1

Answer:

$3. \: ( \frac{x}{2} + \frac{3y}{4} ) \: \: ( \frac{x}{2} + \frac{3y}{4} )$

$( { \frac{x}{2} + \frac{3y}{4}) }^{2}$

$\frac{ {x}^{2} }{4} + \frac{ 9{y}^{2} }{16} + 2 \times \frac{x}{4} \times \frac{3y}{4}$

$\frac{ {x}^{2} }{4} + \frac{ 9{y}^{2} }{16} + \frac{3xy}{8}$

4. 25×5³×t⁸ / t⁴×10

312.5t⁴

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