Question

multiply the sum of minus 3 upon 4 and 2 upon 5 with their difference​

Answer 1

Answer:

0.4025

Step-by-step explanation:

(-3/4+2/5)×(-3/4-2/5)

(-15+8/20)×(-15-8/20)

(-7/20) × (-23/20)

7×23/400

161/400

0.4025

Answer 2

Answer:

Hello dear..

$sum \: of \: \frac{ - 3}{4} and \: \frac{2}{5} \\ = \frac{ - 3}{4} + \frac{2}{5} \\ = \frac{ - 7}{20} \\ difference = \frac{ - 3}{4} - \frac{2}{5} \\ = \frac{ - 23}{20} \\ by \: multiplying.... \\ \frac{ - 7}{20} \times \frac{ - 23}{20} \\ = 0.4$

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