simplify the following using suitable identites:
(3x^2y+z)^2
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Answer:
given, (3x+2y−z)
2
=[3x+2y+(−z)]
2
=(3x)
2
+(2y)
2
+(−z)
2
+2×3x×2y+2×2y×−z+2×3x×−z
=9x
2
+4y
2
+z
2
+12xy−4yz−6xz
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