If x = −2 and y = 1, by using an identity find the value of the foll – InterviewSolution

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1.	If x = −2 and y = 1, by using an identity find the value of the following(i) 4y2 − 9x2 (16y4 + 36x2y2+81x4)(ii) 2x-x2 4x2+x24+1(iii) 5y+15y 25y2-75+225y2
Answer» If x = −2 and y = 1, by using an identity find the value of the following (i) 4y^{2 −}9x² (16y⁴ + 36x²y²+81x⁴) (ii) $(\frac{2}{x} - \frac{x}{2}) (\frac{4}{x^{2}} + \frac{x^{2}}{4} + 1)$ (iii) $(5 y + \frac{15}{y}) (25 y^{2} - 75 + \frac{225}{y^{2}})$

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