If x = 3 and y = − 1, find the values of each of the following using in identify:(i) (9y2 − 4x2) (81y4 +36x2y2 + 16x4)(ii) 3x-x3 x29+9x2+1(iii) x7+y3 x249+y29-xy21(iv) xy-y3 x216+xy12+ y29(v) 5x+5x 25x2-25+25x2

If x = 3 and y = − 1, find the values of each of the following using

1.	If x = 3 and y = − 1, find the values of each of the following using in identify:(i) (9y2 − 4x2) (81y4 +36x2y2 + 16x4)(ii) 3x-x3 x29+9x2+1(iii) x7+y3 x249+y29-xy21(iv) xy-y3 x216+xy12+ y29(v) 5x+5x 25x2-25+25x2
Answer» If x = 3 and y = − 1, find the values of each of the following using in identify: (i) (9y²− 4x²) (81y⁴ +36x²y² + 16x⁴) (ii) $(\frac{3}{x} - \frac{x}{3}) (\frac{x^{2}}{9} + \frac{9}{x^{2}} + 1)$ (iii) $(\frac{x}{7} + \frac{y}{3}) (\frac{x^{2}}{49} + \frac{y^{2}}{9} - \frac{x y}{21})$ (iv) $(\frac{x}{y} - \frac{y}{3}) \frac{x^{2}}{16} + \frac{x y}{12} + \frac{y^{2}}{9}$ (v) $(\frac{5}{x} + 5 x)$ $(\frac{25}{x^{2}} - 25 + 25 x^{2})$