1. \((3 p)^{3}+\left(-\frac{1}{6}\right)^{3}+3(3 p)\left(-\frac{1}{6}\right)\left(3 p-\frac{1}{6}\right)\)
\(=\left(3 p-\frac{1}{6}\right)^{3}\)
2. (7a)2 + 2 × 7a × 5b + (5b)2
सूत्र [x2 + 2xy + y2 = (x + y)] से
= (7a + 5b)2
3. (2x)2 + (-y)2 + (z)2 + 2. (2x)(-y) + 2(-y) (z) + 2. (2x)(z)
= (2x – y + z)2
= (2x – y + z)(2x – y + z)