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write the expansiona a.(2p+2q-3r)all square b.(2x-y square)all cube c.(2\3x-5\3z)all cube |
| (2p+2q-3r)2 = 4p2+4q2+9r2+8pq-12qr-12pr (2x-y2)3 = 8x3-y6-12x2y2+ 6xy4 (2/3x - 5/3z)3 = 8/27x3 - 125/27z3 - 60/27x2z + 150/27xz2 |
