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1(x+4)(x+12)
2(3x+5)(4x-6)
3(y+7)(y-7)
4(8x+15)(8x-5)


Sagot :

Answer:

1.) x² + 16x + 48

2.) 12x² + 2x - 30

3.) y² - 49

4.) 64x² + 80x - 75

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