15. What polynomial must be added to .x^2-2x+ 6 so that
the sum is 3x^2+ 7x ?

Step-by-step explanation:

Just subtract the two because x + y = z and z-x = y

You can test this by adding this expression back to the original.

g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)