Answer:
4x² + [tex]\frac{1}{4x^2}[/tex] = 171
Step-by-step explanation:
2x - [tex]\frac{1}{2x}[/tex] = 13
so,
(2x-[tex]\frac{1}{2x}[/tex])² = (13)²
(2x)² + ([tex]\frac{1}{2x}[/tex])² - 2 (2x) ([tex]\frac{1}{2x}[/tex]) = 13 x 13
4x² + [tex]\frac{1}{4x^2}[/tex] - 2 = 169
4x² + [tex]\frac{1}{4x^2}[/tex] = 169+2
4x² + [tex]\frac{1}{4x^2}[/tex] = 171
