Complete the Integral

Drag or click 3 numbers into the integral. Multiple solutions exist.

abxdx  =  b2a22  =  c\displaystyle \int_a^b x\,dx \;=\; \frac{b^2 - a^2}{2} \;=\; c
Choose aa (lower bound), bb (upper bound), and cc (result) so the equation holds.
xdxx\,dx==