解方程(2m-5)(2m+5)-(2m+1)(2m-3)=(兀-3.14)^0

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解方程(2m-5)(2m+5)-(2m+1)(2m-3)=(兀-3.14)^0
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解方程(2m-5)(2m+5)-(2m+1)(2m-3)=(兀-3.14)^0
解方程(2m-5)(2m+5)-(2m+1)(2m-3)=(兀-3.14)^0

解方程(2m-5)(2m+5)-(2m+1)(2m-3)=(兀-3.14)^0
展开来嘛
(兀-3.14)^0 里面是一个很小的数但不为零 所以它的零次是1
4m^2-25-4m^2+4m+3=1
4m-22=1
m=23/4

2.75

(兀-3.14)^0 =1
(2m-5)(2m+5)=4m^2- 25 (2m+1)(2m-3)=4m^2-4m-3
(2m-5)(2m+5)-(2m+1)(2m-3)=4m-22=1 所以4m=23 m=23/4

原式=4m²-25-4m²+6m-2m+3=1
-22+4m=1
m=23/4