Question

x2-15x+25=0 Bhaskara

Answer 1

Olá AugusttoXD,

X^2 - 15x + 25 = 0 | Delta: b^2 - 4ac
a. 1                          Delta: ( -15 )^2 - 4 . 1 . 25
b. -15                       Delta: 225 - 100
c. 25                        Delta: 125.

X = -b + - raiz de Delta / 2 . a
X' = -b + raiz de Delta /2 . a
X' = - ( -15 ) + aprox. 11,18 / 2 . 1
X' = 15 + 11,18 / 2
X' = 26,18 / 2
X' = 13,09
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X" = -b - raiz de Delta / 2 . a
X" = - ( -15 ) - 11,18 / 2 . 1
X" = 15 - 11,18 / 2
X" = 3,82 / 2
X" = 1,91.

X1 = 13,09
X2 = 1,91.

Espero ter ajudado, bons estudos!