若△abc的三边a,b,c满足a²+2ab+2b²+|√(c-1)-2|=10a+2√(b-4)-22,试判断△abc的形状?

问题描述:

若△abc的三边a,b,c满足a²+2ab+2b²+|√(c-1)-2|=10a+2√(b-4)-22,试判断△abc的形状?

分母分别是a^2-b^2=(a+b)(a-b)a^3-b^3=(a-b)(a^2+ab+b^2)a^2+ab+b^2所以最简公分母是(a+b)(a-b)(a^2+ab+b^2)所以2ab/(a^2-b^2)=2ab(a^2+ab+b^2)/(a+b)(a-b)(a^2+ab+b^2)=(2a^3b+2a^2b^2+2ab^3)/(a+b)(a-b)(a^2+ab+b^...