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Equations and Factor

Equations and Factor (i) (a+b)2 = (a+b)(a+b)=a2+2ab+b2 (ii) (a+b)2-2ab=a2+b2 (iii)(a+b)2=(a2+b)22ab (iv) (a-b)2=(a-b)(a-b)=a2-2ab+b2 (v) (a-b)2 +2ab=a2+b2 (vi) (a-b) 2-(a2+b2)=2ab (vii)(a+b)2-(a-b)2=4ab (viii) (a-b)2-(a+b)2=- 4ab (ix) (a+b)2+(a-b)2=2(a2+b2) (x) a2-b2=(a-b)(a+b) (xi) (a+b)3=a3+b3+3ab(a+b)=a3+b3+3a2b+3ab2 (xii) (a-b)3=a3-b3-3ab(a-b)=a3-b3-3a2b-3ab2

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