Question

A) 2,5a2b(4a2-2ab+0,2b2) б) a2-2a+3)(a-4) в) (3y-4)(y2-y+1)

Answer 1

Ответ:

а) 2,5a2b(4a2-2ab+0,2b2)=5ab(8a-2ab+0,4b)=40a^2b-10a^2b^2+2ab^2

б)(a2-2a+3) (a-4)=a*2(a-4)-2a*(a-4)+3(a-4)=2a^2-8a-2a^2+8a+3a-12=3a-12

в)(3y-4) (y2-y+1)=3y*(y*2-y+1)-4(y*2-y+1)=6y^2-3y^2+3y-8y+4y-4=3y^2-y-4

Answer 2

It looks like you've provided three different algebraic expressions. It seems you might want me to do something with them, like simplify or expand them. Please specify what you would like me to do with these expressions (A, B, and C). Should I simplify, expand, or perform a different operation on each of these expressions?