用因式分解法9(x-3)ˆ2=4(x-2)ˆ2
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用因式分解法9(x-3)ˆ2=4(x-2)ˆ2
用因式分解法9(x-3)ˆ2=4(x-2)ˆ2
用因式分解法9(x-3)ˆ2=4(x-2)ˆ2
9(x-3)²=4(x-2)²
移项得:
[3(x-3)]²-[2(x-2)]²=0
因式分解得:
[3(x-3)+2(x-2)][3(x-3)-2(x-2)]=0
[5x-13][x-5]=0
解为:
x1=13/5或x2=5