Question

|4х+1|=9

и

√5(√2+√125)-2√2,5

Answer 1

|4x+1|=9

4x+1=9

4x=8

x=2

4x+1=-9

4x=-10

x=-2,5

$sqrt{5} ( sqrt{2} + sqrt{125} )-2 sqrt{2,5} = sqrt{5} sqrt{2} + sqrt{5} sqrt{5}*5 -2 sqrt{5} = \ sqrt{10} +5*5- sqrt{10} =25$