Answer:
2a^3 -3a^2 -45a +50
Explanation:
The expansion of the product of polynomials is an application of the distributive property. Usually, it needs to be applied several times.
(2a^2+7a-10)(a-5)
= 2a^2(a -5) +7a(a -5) -10(a -5)
= 2a^3 -10a^2 +7a^2 -35a -10a +50
= 2a^3 -3a^2 -45a +50