Question

pls solve it⬆️⬆️

❤MissAstonish❤​

Answer 1

Answer:

I.

by using (a+b)²=a²+b²+2ab

${( \frac{7}{8} x + \frac{4}{5} y)}^{2}$

$( { \frac{7}{8} x})^{2} + ( { \frac{4}{5} y})^{2} + 2 \times \frac{7}{8} x \times \frac{4}{5} y$

$\frac{49}{64} {x}^{2} + \frac{16}{25} {y}^{2} + \frac{7}{5} xy$

ii. by using (a-b)²=a²+b²-2ab

${( \frac{2}{7}x - \frac{7}{5}y })^{2}$

$( { \frac{2}{5} x})^{2} + ({ \frac{7}{5}y) }^{2} - 2 \times \frac{2}{7} x \times \frac{7}{5} y$

$\frac{4}{25} {x}^{2} + \frac{49}{25} {y}^{2} - \frac{4}{5} xy$

hope u like it

Answer 2

KYA HUA...

BOLO AB...

HMM