Question 672343
(2a+4)^3

2A+4
2A+4 MULTIPLY
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4A^2+8A+8A+16
4A^2+16A+16
2A+4 MULTIPLY
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8A^3+32A^2+32A+16A^2+64A+64
8A^3+48A^2+96A+64 
8(A^3+6A^2+12A+8) ANS.