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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: x^4 – x^2 + 10x – 25 Giúp mik nx vs ạ

Toán Lớp 8: x^4 – x^2 + 10x – 25
Giúp mik nx vs ạ

Comments ( 2 )

  1. x^4 – x² + 10x – 25
    ⇔ x² -10x + 25 – x^4
    ⇔ (x-5)² – (x²)²
    ⇔ (x-5-x²)(x-5+x²)

  2. Giải đáp+Lời giải và giải thích chi tiết:
    x^4 – x^2 + 10x – 25
    = x^4 – (x^2 – 10x + 25)
    = x^4 – ( x – 5)^2
    = (x^2 + x – 5)(x^2 – x + 5)

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222-9+11+12:2*14+14 = ? ( )