Any one know how to find the roots of an equation?

a. 1/4 ± square root of 10
b. 2/4 ± (i square root of 10)/4
c. 1 ± (i square root of 14)/2

i would like to know how to solve this problem.

Jack lives on a farm and has a large backyard. the area of his rectangular backyard is of a square mile. if the width of the yard is of a mile, what fraction of a mile is the length of the rectangular backyard?

Using the figure below, select the two pairs of alternate interior angles. a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)