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marusya05 [52]
3 years ago
11

Factor completel: 12y–9x^2+36–3x^2 y

Mathematics
2 answers:
kozerog [31]3 years ago
4 0

Answer:

Step-by-step explanation:

12y - 9x² + 36 - 3x²y = 12y +36 - 3x²y - 9x²

                                 = 12*(y + 3) -3x²*(y + 3)

                                 = (y+3) (12 - 3x²)

                                 = (y + 3) 3(4 - x²)

                                 = (y + 3) 3(2² - x²)

                                 = (y +3)3 (2 + x)(2 - x)

                                 = 3 (y +3)(2 + x)(2 - x)

fenix001 [56]3 years ago
3 0

Answer:

\large\boxed{12y-9x^2+36-3x^2y=3(3+y)(2-x)(2+x)}

Step-by-step explanation:

12y-9x^2+36-3x^2y\\\\=36+12y-9x^2-3x^2y\\\\=12(3+y)-3x^2(3+y)\\\\=(3+y)(12-3x^2)\\\\=(3+y)(3)(4-x^2)\\\\=3(3+y)(2^2-x^2)\qquad\text{use}\ (a-b)(a+b)=a^2-b^2\\\\=3(3+y)(2-x)(2+x)

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