A.(x-y)2=x2-xy+y2 | B.(a+3b)2=a2+9b2 | ||||
C.(m-4)(m+4)=m2-4 | D.(p-
|
1 |
2 |
1 |
4 |
A.(-3x+2y)(3x+2y) | B.(3x-2y)(2y-3x) |
C.(-3x+2y)(-3x-2y) | D.(3x+2y)(3x-2y) |
A.(2x-3)2=4x2-6x+9 | B.(2a-b)(2a+b)=2a2-b2 |
C.(a+3b)2=a2+6ab+9b2 | D.(m+2)(m-2)=m2-2 |
© 2017-2019 超级试练试题库,All Rights Reserved.