Which of the following is a factor of (49x2−1)+(1+7x)2 ?
1-7x
1+7x
49x
x+1
49x2−1 = (7x+1)(7x-1)
Hence, the common factor for the given polynomial expression is (7x+1).
Which of the following is a factor of (49x2−1)+(1+7x)2?