9x³-0.16x=0
x(9x²-0.16)=0
x(3x-0.4)(3x+0.4)=0
x1=0,x2=2/15,x2=-2/15
49x²-x+1/196=0
(7x)²-2×(7x)×(1/14)+(1/14)²=0
(7x-1/14)²=0
7x-1/14=0
7x=1/14
x=1/98
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9x³-0.16x=0
x(9x²-0.16)=0
x(3x-0.4)(3x+0.4)=0
x1=0,x2=2/15,x2=-2/15
49x²-x+1/196=0
(7x)²-2×(7x)×(1/14)+(1/14)²=0
(7x-1/14)²=0
7x-1/14=0
7x=1/14
x=1/98
很高兴为您解答,【学习宝典】团队为您答题.
请点击下面的【选为满意回答】按钮.