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Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply