railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Algebra Identities

यदि x = b + c, y = c - a, z = a - b है, तो x2 + y2 + z2 - 2xy - 2xz + 2yz का मान ज्ञात कीजिए।

1
2b
2
4c2
3
4b2
4
4a2
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