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= x³ + 3(x²)(4) + 3(x)(16) + 64
= x³ + 12x² + 48x + 64
2. ( x + 2 ) ³ = 1(x)³ + 3(x)²(2) + 3(x)(2)² + 1(2)³
= x³ + 3(x²)(2) + 3(x)(4) + 8
= x³ + 6x² + 12x + 8
= (x+4) (x^2 +8x + 16)
= (x^3 + 8x^2 +16x +4x^2 +32x +64)
= (x^3 + 12x^2 + 48x +64)
2. = (x+2) (x+2) (x+2)
= (x+2) (x^2 +4x +4)
= (x^3 + 4x^2 +4x +2x^2 +8x +8)
= (x^3 + 6x^2 + 12x +8)