(ii) x(x2 + y2 – 22) + y (= x2 - y2 + z2) – z (32 + y2 – 22).
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Answer:
-22x-54z+4xy+4yz+2x²-2y²
Step-by-step explanation:
(2x²+2xy-22x)+(2xy-2y²+2zy)-(32z-2yz+22z)
2x²+2xy-22x+2xy-2y²+2yz-32z+2yz-22z
2x²+4xy-22x-2y²+4yz-54z
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