Answer:
x = ± [tex]\frac{2}{9}[/tex]
Step-by-step explanation:
Given
81x² = 4 ( divide both sides by 81 )
x² = [tex]\frac{4}{81}[/tex] ( take the square root of both sides )
x = ± [tex]\sqrt{\frac{4}{81} }[/tex] = ± [tex]\frac{\sqrt{4} }{\sqrt{81} }[/tex] = ± [tex]\frac{2}{9}[/tex]
