Спростити вираз: 2а ( 5а - 7 ) - 5а ( 3 - 2а ) =

Question

Спростити вираз: 2а ( 5а - 7 ) - 5а ( 3 - 2а ) =

Answer 1

10a^2-14a-15a+10a^2 = 20a^2 - 29a

Answer 2

2а(5a-7)-5a(3-2a)

10a^2-14a)-15a+10^2

10a^2-14-15a+10^2

20a^2-29a