2a²b-a³b²+7b⁴ при a = 3, b = 2

Question

2a²b-a³b²+7b⁴ при a = 3, b = 2

Answer 1

2a2b-a3b2+7b4
a=3,b=2; 2*3*2*2-3*3*2*2+7*2*4=44

Answer 2

2•3^2-3^3•2^2+7•2^4=40