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Exercício de Fatoração 2
Exercício:
Prove que, se x2 + y2 + x2.y2 = (xy + 1)2 e x > y então x – y = 1.
Informações Adicionais:
Obrigado =D
Prove que, se x2 + y2 + x2.y2 = (xy + 1)2 e x > y então x – y = 1.
Obrigado =D
x² + y² + x²y² = (xy+1)²
x² + y² + x²y² = x²y² + 2xy + 1 , corta-se o x²y²
x² + y² – 2xy – 1 = 0, x² -2xy + y² = (x-y)²
(x – y)² – 1 = 0
(x – y)² = 1 , tira-se a raiz dos dois lados:
x – y = +1 ou -1, porém como x>y, só a resposta +1 é aceita.
oii por favor me respondam essa questao de fatoracao x²-x-12 por favor me responda essa tambem x²-3xx+14 e essa x²-16 e essa x-6x+9 e esss a²x-2a²xy+a²y² e essa a³b+2a²b+ab³ por favor me ajudem valeu
x²-2x + xy -2y
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