Answer:
[tex] \boxed{f( - 2) \: is \: - 32}[/tex]
Step-by-step explanation:
f(x) = 5x - 3x² + 6x + 2
f(-2) ?
substitute -2 as x into the equation of the function
f(-2) = 5(-2) - 3(-2)² + 6(-2) + 2
- Note :
- positive × negative = negative
- (-x)² = -x × (-x)
- negative × negative = positive
[tex]f( - 2) = - 10 - 3.4 + ( - 12) + 2[/tex]
[tex] f( - 2) = - 10 - 12 + ( - 12) + 2[/tex]
[tex] f( - 2) = - 22 - 12 + 2[/tex]
[tex]f( - 2) = - 32[/tex]
