What are the benefits of having a quadratic function in standard form ?

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 value √10 and √15 are plotted on the number line

Plz hurry evaluate the expression a+b where a=8 and b=19