Question

(1/5x-1/4y)(5x²-4y²)​

Answer 1

$( \frac{1}{5x} - \frac{1}{4y})(5 {x}^{2} - 4 {y}^{2} ) \\ \\ = > \frac{(4y - 5x)}{20xy} \times (5x + 4y)(5x - 4y) \\ \\ = > \frac{ { - (5x - 4y)}^{2}(5x + 4y) }{20xy}$

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Answer 2

Answer:

simplified answer

x²+y³-xy[500x+320y]/400

Step-by-step explanation:

• (1/5x-1/4y)(5x²-4y²)
• (x/5-y/4)(25x²/5-16y²/4)   -#here multiply and divide it by 5 and 4
• [(4x-5y)/20][(100x²-80y²)/20]  #lcm making denominator equal
• [(4x-5y)(100x²-80y²)]/400   #multiply both
• (400x³-500x²y-320xy²+400y³)/400
• x²+y³-xy[500x+320y]/400

hence the answer

Note: you can change the answer as you can according to text book answer