Four x squared plus 16x minus 5

Step-by-step explanation:

4x^2+16x-5 solved with quadratic formula

x= -4±√21 /2

also x=0.29128784 and -4.29128784

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

it is x=-4

step-by-step explanation: