A.(a+2b)(a-2b)=a2-2b2 | B.(-a+2b)(a-2b)=a2-4b2 |
C.(-a-2b)(a-2b)=-a2+4b2 | D.(-a-2b)(a+2b)=a2-4b2 |
A.(2a-3b)(-2a+3b) | B.(-3a+4b)(-4b-3a) |
C.(a-b)(a+2b) | D.(a+b)(-a-b) |
A.(a+b)2=a2+2ab+b2 | B.(a-b)2=a2-2ab+b2 |
C.a2-b2=(a+b)(a-b) | D.(a+b)2-(a-b)2=4ab |
A.3a+2b | B.3a-2b | C.3a+2b2 | D.3a-2b2 |
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