Question

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b) \\ {(a - b)}^{3} = {a}^{3} - {b}^{3} - 3ab(a - b)$
simplify
please do fast I've to submit my copy for checking​

Answer 1

Answer:

64x³-3.(2x+3p).(2x-3p)(2x+3p+2x-3p)

64x³-3(4x²-9p²)4x

64x³-48x³+108xp²

16x³+108xp²

Step-by-step explanation:

(a³)+(b³)

=(a+b)³-3ab(a+b)

where a=2x+3p

b=2x-3p

Answer 2

Answer:

16x^3 +108xp^2

Step-by-step explanation:

(2x+3p)^3 = 8x^3 + 36x^2p + 54xp^2 + 27p^3

(2x-3p)^3 = 8x^3 - 36x^2p + 54xp^2 - 27p^3

(2x+3p)^3 + (2x-3p)^3 = 16x^3 +108xp^2