MCQ
The value of (xa-b)a+b × (xb-c)b+c × (xc-a)c+a is:
- A0
- B1
- C3
- D2
✓
Answer
- 1
Solution:
(xa-b)a+b × (xb-c)b+c × (xc-a)c+a
$\Rightarrow\text{x}^{\text{a}^{2}-\text{b}^2}\times\text{x}^{\text{b}^2-\text{c}^2}\times\text{x}^{\text{c}^2-\text{a}^2}$
$\Rightarrow\text{x}^{\text{a}^2-\text{b}^2+\text{b}^2-\text{c}^2+\text{c}^2-\text{a}^2}$
$\Rightarrow\text{x}^0=1$
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