Question

$(4a - 5b )3 + (4a + 5b)3$

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Answer 1

4a+5b + 4a-5b

9ab+(-1ab)

9ab+1ab

10 an answer

Answer 2

Answer:

24a

3(4a-5b) + 3(4a+5b)

[(3×4a) + (3×-5b)] + [(3×4a)+(3×5b)]

12a-15b +12a+15b

12a+12a

= 24a