Which products result in a perfect square trinomial? Select three options.
(-x+9)(-x-9)
(xy + x)(xy + x)
(2x - 3)(-3+2x)
(16-x?)(x2-16)
(4y2 +25)(25+4y?)

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

The parabola opens: y=√x-4 (principal square root) up down right left

If a line is defined by the equation y = 5x + 2, what is the slope?