Answer:
option D
Explanation:
we have from statement:
(3х2 -7х + 4)*(5х2 + 2х)
we apply distributive property:
3х2 * 5x2 + 3x2 * 2x - 7x * 5x2 -7x * 2x + 4 * 5x2 + 4 * 2x
so we have:
15x4 + 6x3 - 35x3 - 14x2 + 20x2 + 8x
finally we have:
15x4 - 29x3 + 6x2 + 8x