(i) \((\frac{3\text{x}}{4}+\frac{2y}{9})^2\)
By using the formula (a + b)2 = a2 + b2 + 2ab
We get;
(ii) (9x – 10)2
By using the formula (a - b)2 = a2 - 2ab + b2
We get;
(9x – 10)2
= (9x)2 – 2 × (9x) × 10 + (10)2
= 81x2 – 180x + 100
(iii) (x2y – yz2)2
By using the formula (a - b)2 = a2 - 2ab + b2
We get;
= (x2y – yz2)2
= (x2y)2 – 2 × (x2y) × yz2 + (yz2)2
= x4y2 – 2x2y2z2 + y2z4
(iv) \((\frac{\text{x}}{{y}}-\frac{y}{\text{x}})^2\)
By using the formula (a - b)2 = a2 - 2ab + b2
We get;
(v) \((3m\,-\frac{4}{5}n)^2\)
By using the formula (a - b)2 = a2 - 2ab + b2
We get;
