Question

For the function F defined by F(x) = x2 – 2x + 4, find F(| — 4|).

Answer 1

F(x)=x^2-2x+4

$\\ \sf\longmapsto F(|-4|)$

$\\ \sf\longmapsto F(4)$

$\\ \sf\longmapsto 4^2-2(4)+4$

$\\ \sf\longmapsto 16-8+4$

$\\ \sf\longmapsto 8+4$

$\\ \sf\longmapsto 12$