Предмет: Алгебра, автор: Аноним

разложите на множители и 3 ​

Приложения:

Ответы

Автор ответа: RayMiller
2

Объяснение:

2.

а) ву²–вх²= в(у²–х²)= в(у–х)(у+х)

б)–у²–10у–25= –(у+5)²= –(у+5)(у+5)

в)с⁴а²–а⁴с²= а²с²(с²–а²)=а²с²(с–а)(с+а)

г)х–225х³= х(1–225х²)= х(1–15х)(1+15х)

д) 8а²–16ав+8в²= 2(4а²–8ав+4в²)= 2(2а–2в)(2а–2в)

е)64–х⁴= (8–х²)(8+х²)

ж)–6х²+36х–54= –6(х²–6х+9)= –6(х–3)(х–3)

з) 147а³–3ав²= 3а(49а²–в²)= 3а(7а–в)(7а+в)

3.

а) у²(2+у)=у(у–1)(у+3)

2у²+у³= (у²–у)(у+3)

2у²+у³=у³+3у²–у²–3у

–3у=0

у=0

б)4+4а–а²–а³=0

4(1+а)–а²(1+а)=0

(4–а²)(1+а)=0

совокупность:

4–а²=0

1+а=0

совокупность:

а=2

а=–1

в)16а²+9–24а=0

16а²–24а+9=0

(4а–3)(4а–3)=0

а=–0,75

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