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HỔNG BIẾT NHA

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\(a^{100}+a^{100000000000000000000000000}\)

\(=a^{100+100000000000000000000000000}\)

\(=a^{100000000000000000000000100}\)

a) x³ - 2x² + x

 = x(x² - 2x +1)

= x(x-1)²

b) 2x² + 4x + 2 - 2y²

= 2(x² +2x +1 - y²)

= 2[ (x+1)² - y²]

= 2(x-y+1)(x+y+1)

c) 2xy - x² - y² +16

= 16 - (x² -2xy +y²) 

= 4² - (x-y)²

= (4-x+y)(4+x-y)

A= (4-5x)(3x-2) + (3-2x)(x-2)

A= 12x - 8 - 15x² + 10x + 3x - 6 - 2x² + 4x

A= (12x + 10x + 3x +4x) - (8 +6) -(15x² + 2x²)

A= 29x - 14 - 17x²

Vậy A= 29x - 14 - 17x²

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