Passing through (1,9) parallel to y=5x+6

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7