1) (a+b)3 = ? a) a3+3a2b+3ab2+b3 b) a3+b3 c) a3-3a2b+3ab2+b3 d) a3+3a2b2+3ab+b3 2) (a+b+c)2 = ? a) a2+b2+c2+2ab+2ac+2bc+2abc b) a2+b2+c2+2abc c) a2+b2+c2+2ab+2ac+2bc d) a2+b2+c2 3) a2-b2 = ? a) (a-b)2 b) (a-b)(a+b) c) (a+b)2 d) (a+b)(b-a) 4) (-a+b)2 = ? a) a2-2ab+b2 b) a2+b2 c) a2+ab+b2 d) a2+2ab+b2 5) (a+b)2 = ? a) a2-2ab+b2 b) a2+b2 c) a2+ab+b2 d) a2+2ab+b2 6) (a-b)3 = ? a) a3+3a2b+3ab2+b3 b) a3-3a2b+3ab2-b3 c) a3-b3 d) a3-3a2b2+3ab-b3 7) (a-b)2 = ? a) a2-2ab+b2 b) a2-b2 c) a2-ab+b2 d) a2+2ab+b2 8) (-a-b)2 = ? a) a2-2ab+b2 b) a2+b2 c) a2+ab+b2 d) a2+2ab+b2 9) (a-b-c)2 = ? a) a2+b2+c2+2ab+2ac+2bc+2abc b) a2+b2+c2+2abc c) a2+b2+c2-2ab-2ac+2bc d) a2-b2-c2+2ab-2ac-2bc 10) a3-b3 = ? a) (a-b)(a2+ab+b2) b) (a-b)3 c) (a+b)(a2-ab+b2) d) (a-b)(a2+2ab+b2) 11) a3+b3 = ? a) (a+b)(a2-ab+b2) b) (a-b)(a2+ab+b2) c) (a-b)3 d) (a+b)(a2-2ab+b2) 12) (-a-b)3 = ? a) a3+3a2b+3ab2+b3 b) -a3-b3 c) a3-3a2b+3ab2+b3 d) -a3-3a2b-3ab2-b3 13) (-a+b)3 = ? a) -a3+3a2b-3ab2+b3 b) a3-3a2b+3ab2-b3 c) -a3+b3 d) a3-3a2b2+3ab-b3 14) (a+b-c)2 = ? a) a2+b2-c2+2ab-2ac-2bc b) a2+b2+c2+2abc c) a2+b2+c2+2ab-2ac-2bc d) a2+b2+c2 15) a2+b2 = ? a) (a-b)(a+b) b) (a+b)2 c) (a-b)2 d) a2+b2 16) (-a-b-c)2 = ? a) a2+b2-c2-2ab-2ac-2bc b) -a2-b2-c2-2ab-2ac-2bc c) a2+b2+c2+2ab+2ac+2bc d) a2+b2+c2

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