The constant term in the expansion of binomial (x3 − 1x2) 5 is______ .

The constant term in the expansion of binomial (x3 − 1x2) 5 is______ .

The general term of the expansion is tr + 1 = (- 1) rc5rx15-5r, let 15-5r = 0 get r = 3, so the constant term in the expansion is - C53 = - 10, so the answer is - 10