Question

×ao quadrado=×+12 equaçao do 2°

Answer 1

$x^{2} - x- 12= 0 (x-4)(x+3)=0 x= -3,4$

Answer 2

Boa tarde Safyrah

x² = x + 12

x² - x - 12 = 0

a = 1, b = -1, c = -12

delta
d² = b² - 4ac
d² = (-1)² - 4*1*(-12)
d² = 1 + 48 = 49
d = 7

x1 = (-b + d)/2a = (1 + 7)/2 = 8/2 = 4
x2 = (-b - d)/2a = (1 - 7)/2 = -6/2 = -3

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