If a=\frac{x}{y-z}, b=\frac{y}{z-x} \& c=\frac{z}{x-y} where x, y, z are not all zero, then what is the value of a b+b c+c a=?

AP EAPCET 25-Aug-2021 Shift 1 Paper

Section: Mathematics

Question : 9 of 160

Marks: +1, -0

If a=

y−z

,b=

z−x

& c=

x−y

where x,y,z are not all zero, then what is the value of ab+bc+ca=?

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