Question

за быстрый и правильный ответ.

Answer 1

9)

a)

$2 \sqrt{14 } + 5 \sqrt{14} = 7 \sqrt{14}$

b)

$1.5 \sqrt{17} - 0.8 \sqrt{17} = 0.7 \sqrt{17}$

d)

$4.5 \sqrt{3} - 0.7 \sqrt{3} = 3.8 \sqrt{3}$

e)

$\frac{8}{11} \sqrt{17} - \frac{5}{11} \sqrt{17} = \frac{3 \sqrt{17} }{11}$

f)

$1.5 \sqrt{13} + 1.7 \sqrt{13} - 4 \sqrt{13} = - 0.8 \sqrt{13}$

10)

a)

$\sqrt{20} + \sqrt{45}=2\sqrt{5} + 3\sqrt{5} =5\sqrt{5}$

b)

$\sqrt{75} - \sqrt{48}=5\sqrt{3} + 4\sqrt{3} =\sqrt{3}$

c)

$\sqrt{28} - 5\sqrt{7}=2\sqrt{7} - 5\sqrt{7} =-3\sqrt{7}$

d)

$3\sqrt{18} + 4\sqrt{2}=9\sqrt{2} + 4\sqrt{2} =13\sqrt{2}$

e)

$5\sqrt{3} + \sqrt{27}=5\sqrt{3} + 3\sqrt{3} =8\sqrt{3}$

f)

$5\sqrt{2} + \sqrt{18}=5\sqrt{2} + 3\sqrt{2} =8\sqrt{2}$

g)

$2\sqrt{54} + 7\sqrt{24}=6\sqrt{6} + 14\sqrt{6} =20\sqrt{6}$

h)

$3\sqrt{20} + 2\sqrt{45}=6\sqrt{5} + 6\sqrt{5} =12\sqrt{5}$