Question

como resolver seja p(x) 2x² + x -1. então p(2/3) vale quanto?

Answer 1

p(x) =2x² + x -1. então p(2/3)

p(2/3)=2*(2/3)²+2/3-1 = 2*4/9+2/3-1=8/9+2/3-1

=8/9+6/9-9/9 =5/9