1.Find an equation for the straight lines which pass through the point (1, -2) and are tangent to the parabola with equation y = x^{2}.

Would my two equations bey = xand^{2}-2 = m + c? Where do I go from here? Usually I would make equation 1 equal equation 2, butyis not equal to-2.

2.Solve the following for x by completing the square:What I tried was:

2x^{2}- 4x + 1 = 0

2(x^{2 }- (4/2)x + (1/2)) =0

(x - 1)^{2}+ 1 + (1/2) - 1 = 0

(x - 1)^{2 }- (1/2) = 0

x - 1 = sqrt(1/2) = 0

x = 1 + sqrt(1/2)

Thanks in advance.