Question

Разложите на множители : 1)a²b²-16;2)16x²-25y²;3)1+2c+c²;4)81-18x+x².​

Answer 1

Ответ:

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Answer 2

1) a²b²-16 = (ab)² - 4² = (ab + 4)(ab - 4)

2) 16x²-25y² = (4x)² - (5y)² = (4x + 5y)(4x - 5y)

3) 1+2c+c² = (1+c)²

4) 81-18x+x² = (9-x)²