Question

6a(2b-3a)+2(3a-b)^2
Если a=10,15
b=2

Answer 1

6а(2b-3a)+2(3a-b)²=12ab-18a²+2(9a²-6ab+b²)=12ab-18a²+18a²-6ab+b²=12ab-6ab+b²=6ab(2-1)+b²=6ab+b²=b(6a+b)
a=10.15
b=2
2(6*10.15+2)=125.8