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kan1yeva
@kan1yeva
November 2021
1
6
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Тема:«Формулы Сокращенного Умножения».
Представьте выражение в виде произведения:
1)(a+2)²-1;
2)16-(x+y)²;
3)(5y-6)²-49;
4)(m-7)²-64;
5)16a²-(4a+6)²;
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Verified answer
1)(a+2)²-1 = (a+2-1)(a+2+1) = (a+1)(a+3)
2)16-(x+y)² = (4-x-y)(4+x+y)
3)(5y-6)²-49 = (5y-6-7)(5y-6+7) = (5y-13)(5y+1)
4)(m-7)²-64 = (m-7-8)(m-7+8) = (m-15)(m+1)
5)16a²-(4a+6)² = (4a-4a-6)(4a+4a+6) = -6(8a+6)
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Answers & Comments
Verified answer
1)(a+2)²-1 = (a+2-1)(a+2+1) = (a+1)(a+3)2)16-(x+y)² = (4-x-y)(4+x+y)
3)(5y-6)²-49 = (5y-6-7)(5y-6+7) = (5y-13)(5y+1)
4)(m-7)²-64 = (m-7-8)(m-7+8) = (m-15)(m+1)
5)16a²-(4a+6)² = (4a-4a-6)(4a+4a+6) = -6(8a+6)