Whats a polynomial function that has zeros at -1, 2, 7 all with a multiplicity of 1 in standard form

Which statement about the graph of y = 8(0.25)^2

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?