Question

1. (1) 25(a + b)^2 - 16(a - b)^2 factorize​

Answer 1

Answer:

25(a+b)²-16(a-b)²

25(a²+b²+2ab)-16(a²+b²-2ab)

25a²+25b²+50ab-16a²-16b²+32ab

9a²+9b²+82ab

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