Question

b^2+4a-1-4a^2因式分解

麻烦数学高人来解答一下.在下感激不尽啊.还有几道题也麻烦一下

Answer 1

b^2+4a-1-4a^2
=b^2-(4a^2-4a+1)
=b^2-(2a-1)^2
=(b+2a-1)(b-2a+1)

Answer 2

b^2+4a-1-4a^2
=b^2-4a^2+4a-1
=b^2-(4a^2-4a+1)
=b^2-(2a-1)^2
=(b)^2-(2a-1)^2
=(b+2a-1)(b-2a+1)

Answer 3

-(-1 + 2 a - b) (-1 + 2 a + b)

Answer 4

4a(1-b)^2+2(b-1)^2
=4a(b-1)^2+2(b-1)^2
=(4a+2)(b-1)^2