Question

$\sqrt{4}$$\sqrt{4} x^{2}$

Answer 1

$\sqrt{4} \sqrt{4 x^{2} } =2 \sqrt{2^{2}x^{2}} =2 (2^{2}x^{2})^{ \frac{1}{2}} =2(2^{ \frac{2}{2}} x^{ \frac{2}{2}})=2(2x)=4x$

Answer 2

  _____
√4√4x²

  ____
√4.2x  =   2√2x