Simplify=(2x-y)^3+(2x+y)^3+12x(4x^2-y^2).
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Step-by-step explanation:
step 1
1.1 Evaluate : (2x+y)3 = 8x3+12x2y+6xy2+y3
1.2 Evaluate : (2x-y)3 = 8x3-12x2y+6xy2-y3
16x3 + 12xy2 = 4x • (4x2 + 3y2)
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