因式分解:x+2xy+4y²-1

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因式分解:x+2xy+4y²-1因式分解:x+2xy+4y²-1因式分解:x+2xy+4y²-1x+2xy+4y²-1=x(1+2y)+(2y+1)(2y-1)

因式分解:x+2xy+4y²-1
因式分解:x+2xy+4y²-1

因式分解:x+2xy+4y²-1
x+2xy+4y²-1
=x(1+2y)+(2y+1)(2y-1)
=(2y+1)(x+2y-1)

x+2xy+4y²-1
=(x+2xy)+(4y^2-1)
=x(2y+1)+(2y+1)(2y-1)
=(2y+1)(x+2y-1)

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

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