下列等式从左到右的变形,属于因式分解的是( )
| A.a(x+y)=ax+ay | B.t2+3t-16=(t+4)(t-4)+3t |
| C.m2-4=(m+2)(m-2) | D.a2-b2+1=(a+b)(a-b)+1 |
| A.a(x+y)=ax+ay | B.t2+3t-16=(t+4)(t-4)+3t |
| C.m2-4=(m+2)(m-2) | D.a2-b2+1=(a+b)(a-b)+1 |