If you're completing the square the answer is in the image.
expression
x^2 + 5x - 5=ax^2+bx+c
a=1, b=5, c=-5, and you can solve it that way.
This is called the Pythagorean theorem : a ² + b ² = c ². You can substitute any of the variable with any of the known numbers and then you all you have to do is isolate the variable. I hope that helps!!
1 mile = 1.6 kms
22 miles / sec = 22*1.6 = 35.2 km / sec
Number of kms that Venus travel in 2 seconds = 70.4