Verified answer

x = 3sqrt(5) or -3sqrt(5)

[-b ± √(b² - 4ac)] / 2a where a=1, b=0, and c=-45

x = [-0 ± √(0² - 4(1)(-45)] /2(1)

x = ± √180 /2

x = ± √(36*5) / 2

x = ± 6√5 / 2 = ± 3√5

[ -b ± sqrt(b^2 - 4ac) ] / 2a

a = 1 b = 0 c = -45

[-0 + sqrt(0^2 - 4(1)(-45))] / 2(1) = [sqrt(4*45)] / 2 = [sqrt(180)]/2 = sqrt(45) = 3sqrt(5)

x^2= 45== 9(5) ...x=3 square root of 5. =-3 square root of 5

Sorry, but this is how I would do it.

x^2 =45

x = 3\/5 OR -3\/5 ANSWER

use the quadratic formula --->x = 3 sqrt5 or -3 sqrt5

x = sqrt(45)

there is a step by step solution here

http://symbolab.com/solutions/linear_equations?que...