因式分解的几个问题 a²-9b²+2a-6b x²+x-4y²-2y
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因式分解的几个问题 a²-9b²+2a-6b x²+x-4y²-2y
因式分解的几个问题 a²-9b²+2a-6b x²+x-4y²-2y
因式分解的几个问题 a²-9b²+2a-6b x²+x-4y²-2y
a²-9b²+2a-6b
=(a+3b)(a-3b)+2(a-3b)
=(a-3b)(a+3b+2)
x²+x-4y²-2y
=(x²-4y²)+(x-2y)
=(x+2y)(x-2y)+(x-2y)
=(x-2y)(x+2y+1)
a²-9b²+2a-6b
=a(a+2)-3b(3b+2)
x²+x-4y²-2y
=x(x+1)-2y(2y+1)
a2-9b2+2a-6b
=(a+3b)(a-3b)+2(a-3b)
=(a-3b)(a+3b+2)
x2+x-4y2-2y
= x2-4y2+x-2y
=( x+2y)(x-2y)+(x-2y)
=(x-2y)(x+2y+1)
a²-9b²+2a-6b
=(a+3b)(a-3b)+2(a-3b)
=(a-3b)(a+3b+2)
x²+x-4y²-2y
=(x+2y)(x-2y)+x-2y
=(x-2y)(x+2y+1)
a²-9b²+2a-6b
=(a²-9b²)+(2a-6b)
=(a+3b)(a-3b)+2(a-3b)
=(a-3b)(a+3b+2)
x²+x-4y²-2y
=(x²-4y²)+(x-2y)
=(x+2y)(x-2y)+(x-2y)
=(x-2y)(x+2y+1)
a²-9b²+2a-6b
=a²+2a+1-9b²-6b -1
=(a+1)²-(3b+1)²
x²+x-4y²-2y
=x²+x+1/4-4y²-2y-1/4
=(x+1/2)²-(2y+1/2)²
a²-9b²+2a-6b=(a-3b)(a+3b)+2(a-3b)=(a+3b+2)(a-3b)
x²+x-4y²-2y =(x+2y)(x-2y)+(x-2y)=(x+2y+1)(x-2y)