Question

efetue :
2a ³ . a²
2ab².5a²
3.(-8xy)
3x (x²-2x+3)
3x³(2x²+7x-8)

Answer 1

2a^3.a^2
2a^5

2ab^2.5a^2
10a^3b^2

3(-8xy)
-24xy

3x(x^2 - 2x + 3)
3x^3 - 6x^2 + 9x

3x^3(2x^2 + 7x - 8)
6x^5 + 21x^4 - 24x^3