Преобразуйте в многочлен:
а) (t
– 5)(t
+ 5) – 4t(6
– t);
в)
2(n
– 5)2 – 2n2.
б) (k
– 7)2 – 5k(k
+ 2);
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Преобразуйте в многочлен:
а) (t
– 5)(t
+ 5) – 4t(6
– t);
в)
2(n
– 5)2 – 2n2.
б) (k
– 7)2 – 5k(k
+ 2);
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Answers & Comments
Verified answer
а) (t– 5)(t+ 5) – 4t(6– t)=t²-25-24t+4t²=5t²-24t-25в)2(n– 5)² – 2n²=2(n²–10n+25)- 2n²= 2n²-20 n+50- 2n²=4 n²-20 n+50
б) (k– 7)²– 5k(k+ 2)=к²-14к+49-5к²-10к=-4к²-24к+49