Question

simplify the following​

Answer 1

Step-by-step explanation:

i)4√8+√32-3√2 = 4×2√2+4√2-3√2

= 8√2+4√2-3√2 = 9√2

ii)

$3 \sqrt{7} + 7 \sqrt{63} + \frac{ \sqrt{7} }{7}$

$= 3 \sqrt{7} + 7 \times 3 \sqrt{7} + \frac{ 1 }{ \sqrt{7} }$

$= \frac{3 \times 7 + 21 \times 7 + 1}{ \sqrt{7} } = \frac{21 + 147 + 1}{ \sqrt{7} }$

$\frac{169}{ \sqrt{7} }$