Question

use the column method to find the following products.(2/7L-1/4m)(2/7L-1/4m)​

Answer 1

Answer:

Here is your answer

Step-by-step explanation:

$( \frac{2l}{7 } - \frac{m}{4} )( \frac{2l}{7} - \frac{m}{4} )$

$= \frac{2l}{7} ( \frac{2l}{7} - \frac{m}{4} ) - \frac{m}{4} ( \frac{2l}{7} - \frac{m}{4} )$

$= \frac{ {4l}^{2} }{49} - \frac{2lm}{28} - \frac{2lm}{28} + \frac{ {m}^{2} }{16}$

$= \frac{ {4l}^{2} }{49} - \frac{4lm}{28} + \frac{ {m}^{2} }{16}$

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