Which expression is equal to c2−4c+412c3+30c2÷c2−46c4+15c3?

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

The equation respenting the left table is

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"