Question

gente qual e o Caulo dessa equações do 2° grau
x (2x-3) = 4x -1

Answer 1

x(2x-3) = 4x -1
2x²-3x = 4x -1
2x² -3x - 4x + 1 = 0
2x² -7x +1 = 0
delta = 49 -8
delta = 41
x1 = (7 + raiz(41))/4


x1 = (7 + raiz(41))/4

x2 = (7 - raiz(41))/4

x2 = (7 - raiz(41))/4

;)

Answer 2

x (2x-3) = 4x -1
2x² - 3x - 4x + 1 =0
2x² - 7x + 1 = 0
a = 2
b = - 7
c = 1

Basta vc fazer bháscara

$Delta= b^{2}.4.a.c \\ \\ X= \frac{-B+- \sqrt[]{Delta} }{2.a}$