1. (3+n)(m-2n)
2. (9a-4)(9a+4)
3. y(y+9)²
Объяснение:
1. 3m - 6n + mn - 2n² = 3(m-2n) + n(m-2n) = (3+n)(m-2n)
2. 81a²-16 = 9²*a²-4²=(9a-4)(9a+4)
3. y³+18y²+81y = y(y²+18y+81) = y(y²+2*9y+9²) = y(y+9)²
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1. (3+n)(m-2n)
2. (9a-4)(9a+4)
3. y(y+9)²
Объяснение:
1. 3m - 6n + mn - 2n² = 3(m-2n) + n(m-2n) = (3+n)(m-2n)
2. 81a²-16 = 9²*a²-4²=(9a-4)(9a+4)
3. y³+18y²+81y = y(y²+18y+81) = y(y²+2*9y+9²) = y(y+9)²
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