Question

Помогите пж. Алгебра 9 клас

Answer 1

$y_{n}=4n^{2}-3n\\\\y_{1}=4*1^{2}-3*1=4-3=1\\\\y_{2} =4*2^{2}-3*2=4*4-6=16-6=10\\\\y_{3}=4*3^{2}-3*3=4*9-9=36-9=27$