Question

3x²-12=0 forma do delta

Answer 1

a= 3
b= 0
c= -12

delta:
$0 {}^{2} - 4 \times 3 \times ( - 12) \\ 0 + 144 \\ 144$

bhaskara:
-0-+12
÷2.3

x'= -0+12
÷6
x' = +2

x"= -0-12
x"= - 2

S= [(+2,-2)]