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Inequalities: Quiz 6 - Answers
Inequalities: Quiz 6 - Answers
1) -4 < a < -2
2) -5 ≤ b ≤ 2
3) c ≤ -5 or c ≥ -4
4) d ≤ -7 or d ≥ 3
5) -6 < e < -3
6) f ≤ -3 or f ≥ 4
7) -7 < g < 2
8) -5 ≤ h ≤ 5
9) i ≤ -4 or i ≥ -1.5
10) -¾ ≤ j ≤ 5
2) -5 ≤ b ≤ 2
3) c ≤ -5 or c ≥ -4
4) d ≤ -7 or d ≥ 3
5) -6 < e < -3
6) f ≤ -3 or f ≥ 4
7) -7 < g < 2
8) -5 ≤ h ≤ 5
9) i ≤ -4 or i ≥ -1.5
10) -¾ ≤ j ≤ 5
Working
Questions
Solve the following inequalities without using a calculator
1) a2 + 6a + 8 < 0
2) b2 + 3b – 10 ≤ 0
3) c2 + 9c + 20 ≥ 0
4) d2 + 4d – 21 > 0
5) e2 + 9e + 18 < 0
6) f2 ≥ f + 12
7) 2g2 + 7g – 10 < g2 + 2g + 4
8) 2h2 + 3h ≤ h2 + 3h + 25
9) 2i2 + 11i + 12 ≥ 0
10) 3j2 – 17j ≤ 15 – j2