Question

gente, ajuda PFV
quanto é-6+6x+4-2x^2=2

Answer 1

-6+6x+4-2x²=2
-2x²+6x-6+4-2=0
-2x²+6x-4=0

/\=6²-4.(-2).(-4)
/\=36+8.(-4)
/\=36-32
/\=4

x'= -6+2÷ -4
x'= -4÷ -4
x'= 1

x"= -6-2÷ -4
x"= -8÷ -4
x"= 2

S={1,2}