Question

first will get brllient
with formula​

Answer 1

i. (5a+6b)²

=(5a)² + (6b)² +2.5a.6b

=25a² + 36b² + 60ab

ii.(ax-by)²

=(ax)² + (by)² - 2.ax.by

=ax² + by² - 2abxy

Step-by-step explanation:

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