What is y=2x^2-8x+9 rewritten in vertex form

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.