Question

(4/5x-2/3y)(10/7x+9/10y)(2/3x+1/8y)​

Answer 1

solution=>

$=( \frac{4}{5} x - \frac{2}{3} y)( \frac{10}{7}x + \frac{9}{10}y)( \frac{2}{3}x + \frac{1}{8} y) \\ \\ = ( \frac{40}{35} x {}^{2} + \frac{36}{50}xy - \frac{20}{21}xy - \frac{18}{30}y {}^{2}) ( \frac{2}{3}x + \frac{1}{8} y) \\ \\ = (\frac{8}{7} x {}^{2} - \frac{3}{5}y {}^{2} - \frac{163}{105}xy) ( \frac{2}{3}x + \frac{1}{8}y ) \\ \\ = \frac{16}{21} x {}^{3} + \frac{1}{7} x y {}^{2} - \frac{2}{5} x {}^{2} y - \frac{3}{40} y {}^{3} - \frac{326}{210} x {}^{2} y - \frac{163}{840}xy {}^{2} \\ \\ = \frac{16}{21}x {}^{3} - \frac{3}{40} y {}^{3} - \frac{41}{21} x {}^{2}y - \frac{43}{840} xy {}^{2}$

I hope it helps for you

Answer 2

Answer:

i hope it is helpful.

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Step-by-step explanation:

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