Question

sendo f(x) =x2 -7x+6 determine os valores de x de modo que : f(x)=o

Answer 1

x^2 - 7x + 6 = 0
x^2 - 7x + 6

Delta = b^2 - 4ac
Delta = 7^2 - 4.1.6
Delta = 49 - 24
Delta = 25

X = - b +- √Delta / 2a
X = -7 +- √25 / 2.1
X = -7 +- 5 / 2

X' = -7+5/2
X = -1

X" = -7-5/2
X"= -6