1/2(a+b)(a+b)=ab+1/2c^2化简
问题描述:
1/2(a+b)(a+b)=ab+1/2c^2化简
答
1/2(a+b)(a+b)=ab+1/2c^2
1/2(a²+b²+2ab)=ab+1/2c²
a²+b²+2ab=2ab+c²
a²+b²=c²