Which of the following is not a monomial?
Which of the following identity is not applicable to simplify (4x+5y)2−(5x+4y)2?
Which of the following is correct? a) (a−b)2=a2+2ab−b2 b) (a−b)2=a2−2ab+b2 c) (a−b)2=a2−b2 d) (a+b)2=a2+2ab−b2