Question

Найдите f(-2), f(t-2), если f(z) =2z^2-z-5

Answer 1

f(-2)=2*(-2)^2+2-5=10-5=5

f(t-2)=2(t-2)^2-(t-2)-5=2t^2-8t+8-t+2-5=2t^2-9t+5