Question

cíu

Answer 1

a) \(\left(3-a\right)^2-\sqrt{6a^4}=9-6a+a^2-a^2\sqrt{6}\) \(=\left(1-\sqrt{6}\right)a^2-6a+9\)

b) \(\dfrac{\sqrt{63y^3}}{\sqrt{7y}}=\sqrt{\dfrac{63y^3}{7y}}=\sqrt{9y^2}=3y\)