Question

помогите пожалуйста!​

Answer 1

Ответ:

$\sqrt{ \frac{15 \times 20}{3 } } = \sqrt{5 \times 20 } = 10 \\ \sqrt{ \frac{75}{108} } = \sqrt{ \frac{25}{36} } = \sqrt{ \frac{5}{6} }$

$\sqrt{ {5}^{4} } \times \sqrt{ {4}^{5} } = {5}^{2} \times \sqrt{ {2}^{6} } = 25 \times {2}^{3} = 800$

8х+1=49

х=48/8

х=6

х^2+4х+4-4х=5

х^2=1

х=+-1

4х^2+2х=0

х(2х+1)=0

х=0 2х+1=0

х=-0.5

3х=9

х=3