Question

função do 2 grau f(x)=-3x2+7x-1 x=-2,-1,0,1,2,3

Answer 1

Ola Felipe

f(x) = -3x² + 7x - 1 

f(-2) = -3*4 - 2*7 - 1 = -12 - 14 - 1 = -27 
f(-1) = -3*1 - 1*7 - 1 = -3 - 7 - 1 = -11
f(0) = -1
f(1) = -3*1 + 7 - 1 = 3
f(2) = -3*4 + 2*7 - 1 = 1
f(3) = -3*9 + 3*7 - 1 = -27 + 21 - 1 = -7