Question

Calcule o valor de x quando: f(2)
a) x²-13x+42
b)-2x²-5x+6
c) 5x²-3x-2


Amo vocês

Answer 1

a) f(2) = 2^2 - 13.2 + 42
f(2) = 4 - 26 + 42
f(2) = 20

b) f(2) = -2.2^2 - 5.2 + 6
f(2) = -8 -10 +6
f(2) = -12

c) f(2) = 5.2^2 -3.2 -2
f(2) = 20 -6 -2
f(2) = 12