Question

calculus ab question
if the integral of x^2-2x+2 dx from 0,6 is approximated by three non-overlapping inscribed rectangles of equal width of two on the x-axis, then the approximation is?
the answer is 26 but i have no idea how to do this

Answer 1

assuming this picture roughly demonstrates your problem or a problem like yours

how would you go about calculating the area of the 3 rectangles