Practice problem
Let P=5x3+4P = 5x^3 + 4P=5x3+4 and Q=10x+8Q = 10x+8Q=10x+8. Find the product P×QP\times QP×Q.
50x4+40x3+40x+3250x^4 + 40x^3 + 40x +3250x4+40x3+40x+32
50x4+80x3+3250x^4 + 80x^3 + 3250x4+80x3+32
50x3+3250x^3 + 3250x3+32
40x3+40x40x^3 + 40x40x3+40x
Type a concept, like “slope” or “photosynthesis”.