Question

Find the value of √5 correct to 2 decimal places; then use it to find the square root of V+ correct to 2 significant digits.​

Answer 1

Step-by-step explanation:

√5 = 2.236 = 2.24

by using dividing methed do the square of √5 as in attachment

$\sqrt{ \frac{ 3-√5 }{\: 3+√5\: } } \\ \sqrt{ \frac{ \: \: \: \: (3-√5)(3-√5) }{ \: \: \: (3+√5)(3-√5)\: } } \\ = \sqrt{ \frac{(3-√5)²}{(3)²-(√5)²} } = \sqrt{ \frac{(3-√5)²}{9-5} } \\ = \sqrt{ \frac{(3-√5)²}{4} } = \frac{(3-2.24)}{2} \\ = \frac{(0.76)}{2} = 0.38 \\ answer = 0.38$