(y的平方+3y)-(2y+6)因式分解?
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(y的平方+3y)-(2y+6)
=y的平方+3y-2y-6
=y的²+y-6
=(y+3)(y-2),2,(y的平方+3y)-(2y+6)
=(y²+3y-2y-6)(y²+3y+2y+6)
=(y²+y-6)(y²+5y+6)
=(y-2)(y+3)(y+2)(y+3)
=(y-2)(y+2)(y+3)²,2,(y+3)(y-2),1,(y的平方+3y)-(2y+6)
=y(y+3)-2(y+3)
=(y+3)(y-2),0,
=y的平方+3y-2y-6
=y的²+y-6
=(y+3)(y-2),2,(y的平方+3y)-(2y+6)
=(y²+3y-2y-6)(y²+3y+2y+6)
=(y²+y-6)(y²+5y+6)
=(y-2)(y+3)(y+2)(y+3)
=(y-2)(y+2)(y+3)²,2,(y+3)(y-2),1,(y的平方+3y)-(2y+6)
=y(y+3)-2(y+3)
=(y+3)(y-2),0,
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