CBSE Class 9 Answered
Simplify
(x + y + z)2 - (x + y - z)2.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(x + y + z)2 - (x + y - z)2
=(x2 + y2 + z2 + 2xy + 2yz + 2zx) - (x2 + y2 + z2 + 2xy - 2yz - 2zx)
=
= 4yz + 4zx
= 4z(y + x)
Answered by | 04 Jun, 2014, 03:23: PM
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