Ikkinchi darajali bir noma'lumli tengsizliklar sistemalari — 9-sinf Algebra test savollari

1.{x²-5x+6>0, 3x+4≥0} tizimni yeching.

• A)$-\frac{4}{3}\le x<2$ yoki x > 3
• B)$-\frac{4}{3}\le x\le 2$
• C)x > 3
• D)x < 2

2.{x²+x-6<0, -x²+2x+3≤0} tizimni yeching.

• A)-3 < x ≤ -1
• B)-3 < x < 2
• C)x ≥ 3
• D)-1 ≤ x < 2

3.{7x-x²>0, 36-x²>0} tizimni yeching.

• A)0 < x < 6
• B)0 < x < 7
• C)-6 < x < 6
• D)6 < x < 7

4.{8x+x²<0, 49-x²>0} tizimni yeching.

• A)-7 < x < 0
• B)-8 < x < 0
• C)-7 < x < 7
• D)0 < x < 7

5.{-x²+x+20≤0, x²-x-2>0} tizimni yeching.

• A)x ≤ -4 yoki x ≥ 5
• B)x ≤ -4
• C)x ≥ 5
• D)-4 ≤ x ≤ 5

6.{x²-4≤0, x+1>0} tizimni yeching.

• A)-1 < x ≤ 2
• B)-2 ≤ x ≤ 2
• C)x > -1
• D)-2 < x < 2

7.{x²-9<0, x-2≥0} tizimni yeching.

• A)2 ≤ x < 3
• B)-3 < x < 3
• C)x ≥ 2
• D)2 < x < 3

8.{x²>4, x<3} tizimni yeching.

• A)x < -2 yoki 2 < x < 3
• B)x < -2
• C)2 < x < 3
• D)x < 3

9.{x²-1≥0, x≤0} tizimni yeching.

• A)x ≤ -1
• B)x ≥ 1
• C)-1 ≤ x ≤ 0
• D)x ≤ 0

10.{x²-16<0, x>-2} tizimni yeching.

• A)-2 < x < 4
• B)-4 < x < 4
• C)x > -2
• D)-4 < x < -2