Hence by using a suitable substitution ,solve the equation 2

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Hence by using a suitable substitution ,solve the equation 25^2(5x+3)=50x+24

题目再清楚表述一下,25^2(5x+3)?括号前面是什么?
再问：是25x^2(5x+3)=50x+24
再答：是25乘以X的平方，再乘以(5x+3)吗？
再问：是的，麻烦你把过程也给出来。。。
再答：令5x+3=t，则5x=t-3 则原式变形为（t-3)^2*t=10(t-3)+24 化简 t^3-6*t^2-(t-6)=0 t^2(t-6)-(t-6)=0 (t-6)*(t+1)*(t-1)=0 则t=6或1或-1 则x=3/5或-2/5或-4/5

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