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If x = y = z and x + y + z ≠ 0, then each ratio is xa + yb + zc ya + zb + xc za + xb + yc
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1 a - b - c -
1 a + b - c -
1 a - b + c -
1 a + b + c
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Correct Option: D
| = | = | ||||
| xa + yb + zc | ya + zb + xc | za + xb + yc |
| = | |
| xa + yb + zc + ya + zb + xc + za + xb + yc |
| = | |
| xa + ya + za + yb + ya + yc + zc + zb + zc + za |
| = | |
| a(x + y + z) + b(x + y + z) + c (x + y + z) |
| = | |
| (a + b + c)(x + y + z) |
| = | |
| a + b + c |
