Answer with explanation:
[tex]1. \sqrt{45}=\sqrt{3 \times 3 \times 5}\\\\=3 \sqrt{5}\\\\2. \sqrt{180 x^2}\\\\=\sqrt{3\times 3 \times 2 \times 2 \times 5 \times x \times x}\\\\=3 \times 2 \times x\times \sqrt{5}\\\\=6 x \sqrt{5}\\\\3. \sqrt{490 y^5w^6}=\sqrt{7 \times 7 \times 2 \times 5 \times (y^2)^2\times y \times (w^3)^2}=7y^2w^3\sqrt{10 y}[/tex]
