45-36÷{90÷(8-5)-8×[3×13-9×(72-68)]} =
can somebody explain step by step please

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

Can (2,3 and square root 10) be sides ona right triangle?

Write the expression as a single natural logarithm. 2 in a - 4 in y