Evaluate each of the following using identities : (i) (2x−1x)2 (ii)

1.	Evaluate each of the following using identities : (i) (2x−1x)2 (ii) (2x+y)(2x−y) (iii) (a2b−b2a)2 (iv) (a−0.1)(a+0.1) (v) (1.5x2−0.3y2)(1.5x2+0.3y2)
Answer» Evaluate each of the following using identities : (i) ${(2 x - \frac{1}{x})}^{2}$ (ii) $(2 x + y) (2 x - y)$ (iii) $(a^{2} b - b^{2} a)^{2}$ (iv) $(a - 0.1) (a + 0.1)$ (v) $(1.5 x^{2} - 0.3 y^{2}) (1.5 x^{2} + 0.3 y^{2})$

Evaluate each of the following using identities : (i) (2x−1x)2 (ii) (2x+y)(2x−y) (iii) (a2b−b2a)2 (iv) (a−0.1)(a+0.1) (v) (1.5x2−0.3y2)(1.5x2+0.3y2)

Answer»

Evaluate each of the following using identities :

(i) ${(2 x - \frac{1}{x})}^{2}$

(ii) $(2 x + y) (2 x - y)$

(iii) $(a^{2} b - b^{2} a)^{2}$

(iv) $(a - 0.1) (a + 0.1)$

(v) $(1.5 x^{2} - 0.3 y^{2}) (1.5 x^{2} + 0.3 y^{2})$