Question

Simplifique as expressões (x+1)²-(x-1)²

Answer 1

( x + 1 )²- ( x - 1 )²  = x² + 2x + 1 - ( x² - 2x + 1 ) = x² + 2x + 1 - x² + 2x - 1

x² - x² + 2x + 2x + 1 - 1 = 4x

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Answer 2

x²+2x+1-(x²-2x+1)=

x²+2x+1-x²+2x-1=

4x → Resposta simplificada:)