If x = b + c, y = c a, z = a b, then
x2 + y2 + z2 - 2xy - 2xz + 2yz is equal to
| A. | a + b + c |
| B. | 4b2 |
| C. | abc |
| D. | a2 + b2 |
Answer : B Explanation :
x2 + y2 + z2-2xy - 2xz + 2yz |
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Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
