Question

16(a + b)² - 9(a - b)²​

Answer 1

Answer:

7a^2+7b^2+50ab

Step-by-step explanation:

16(a^2+b^2+2ab)-9(a^2+b^2-2ab)

7a^2+7b^2+50ab

Answer 2

Answer:

16(a+b)²-9(a-b)²

16a²+16b²-9a²-9b²

16a²-9a²+16b²+9b²

7a²+25b²

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