Question

Vamos resolver a inequação 3x² + 10x + 7

Answer 1

Resposta:

Δ=$b^{2}-4.a.c$

Δ=$10^{2}-4.3.7$

Δ=$100-84$

Δ=$16$

------------------------

x'=$-b+\sqrt{delta}\\------\\2.a$

x'= $-10+4\\-------\\2.3$

x'=$-6\\----\\6$

x'= -1

x''= $-b-\sqrt{delta}\\------\\2.a$

x''= $-10-4\\-------\\2.3$

x''=$-14\\---\\6$

x''= -2,33