Ответ:
Объяснение: 1) 3x²-12= 3×(x²-4) = 3×(x-2)×(x+2) ;
2) 16x-4x³ = 4x×(4-x²) = 4x×(2-x)×(x+2) ;
3) 2x²-4xy + 2y² = 2×(x² - 2xy +y²) = 2×(x-y)² ;
4) 27a² + 18ab + 3b² = 3×(9a² + 6ab + b²) = 3×((3a)²+2×3ab+b²)=
=3×(3a+b)² .
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Answers & Comments
Ответ:
Объяснение: 1) 3x²-12= 3×(x²-4) = 3×(x-2)×(x+2) ;
2) 16x-4x³ = 4x×(4-x²) = 4x×(2-x)×(x+2) ;
3) 2x²-4xy + 2y² = 2×(x² - 2xy +y²) = 2×(x-y)² ;
4) 27a² + 18ab + 3b² = 3×(9a² + 6ab + b²) = 3×((3a)²+2×3ab+b²)=
=3×(3a+b)² .