Question

RESOLVA USANDO A FÓRMULA DE BASKARA

- X² + X + 12 = 0

Answer 1

Δ=$1^{2}-4.-1.12$
Δ=1+48
Δ=49

x=$\frac{-1+/- \sqrt{49}}{-2}$
x=$\frac{-1+/-7}{-2}$

x=$\frac{-1-7}{-2} = \frac{-8}{-2} =4$

x²=$\frac{-1+7}{-2} = \frac{6}{-2}=-3$

S={-3;4}

Answer 2

/\=b²-4.a.c

x=-b+-V/\ ÷2.a

S={-3,4}