Question

Calcule x e y da função f(x)=3x²+12x+9
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Answer 1

f(x)=3x²+12x+9
3x²+12x+9=0
Simplifica por 3:
x²+4x+3=0
a = 1; b = 4; c = 3
x = -b±√b²-4ac /2a
x = -4±√4²-4·1·3 /2·1
x = -4±√16-12 /2
x = -4±√4 /2
x = -4±2 /2

x' = -4+2/2
x' = -2/2
x' = -1

x'' = -4-2/2
x'' = -6/2
x'' = -3