Solve the inequality. r + 4 – 2(r – 14) > 0
2 answers:
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Try to understand this. Hope this help. Answer for 2 only.
Answer:
positive
Step-by-step explanation:
the discriminant of the function is postive.
because from the graph we notice that it has 2 intercepts on x-axis, which means the function has 2 real solution when y=0
that implies the discriminant is positive.
if we have 2 distinct real solution
if we have no real solution but 2 complex solutions
if we have 2 identical real solution