Question

x²-x-12=0 pff ajuda ;-;-

Answer 1

x²-x-12=0
a=1
b=-1
c=-12

/\=1-4.1.(-12)
/\=1-4.(-12)
/\=1+48
/\=49

x=(1+-7)/2

x'=(1+7)/2
x'=8/2
x'=4

x"=(1-7)/2
x"=6/2
x"=3

Resposta = (4,3)

Answer 2

X(2)-x-12=0 X=-b+- (raiz) b2-4.a.c/2.a X=-(-1) +- (raiz) -1(2) -4. 1. (-12)/2.a X= 1 +- (raiz) 49 X= 1+- 7/2 X1= 1+7/2= 8/2=4 X2=1-7/2= -6/2=-3 Espero ter ajudado:)