Set-26 Quadratic Equations (Inequalities) For SBI PO and SBI Clerk 2019 | Must Go Through These Questions

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We are providing the most important Quadratic Equations (Inequalities) for SBI PO 2019, SBI Clerk 2019 and all other competitive bank and insurance exams. These questions have very high chances to be asked in SBI PO 2019, SBI Clerk 2019.
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Directions:1-5) In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer.

1.
2x2 + x – 1 = 0
6y2 – 13y + 5 = 0

2.
21x2 – 122x + 165 = 0
3y2 – 2y – 33 = 0

3.
5x2 – 29x + 36 = 0
10y2 – 3y – 27 = 0

4.
7x + 4y = 3
5x + 3y = 3

5.
7x2 – 54x + 99 = 0
4y2 – 16y + 15 = 0

Directions:6-10) In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer.

6.
3X2 +21x +30 =0
5Y2+22y +21 =0

7.
3x2– 20x + 32 = 0
2y2 – 19y + 44 = 0

8.
7x – 4y = 40
8x + 8y = 8

9.
(2025X) 1/2 +3600= 0
(16)1/4 y + (512)1/3 = 0

10.
15x2 + 68x + 77 = 0
3y2 + 29y + 68 = 0

 

 

Check your Answers below:

 

 

 

Directions:1-5) In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer.

1. Question

2x2 + x – 1 = 0
6y2 – 13y + 5 = 0

Ans: 4
2x2 + x – 1 = 0
X = -1, 1/2
6y2 – 13y + 5 = 0
Y = 10 /6 , 3/6 = 1.666 , 0.5
x ≤ y

2. Question

21x2 – 122x + 165 = 0
3y2 – 2y – 33 = 0

Ans: 5
21x2 – 122x + 165 = 0
X = 11/3, 15/7
3y2 – 2y – 33 = 0
Y = -3, 11/3
If x = y or relation cannot be established

3. Question

5x2 – 29x + 36 = 0
10y2 – 3y – 27 = 0

Ans: 3
5x2 – 29x + 36 = 0
X = 4,9/5
10y2 – 3y – 27 = 0
Y = -3/2 , 9/5 .
x ≥ y

4. Question

7x + 4y = 3
5x + 3y = 3

Ans: 2
7x + 4y = 3
5x + 3y = 3
X = -3, Y= 6.
x < y

5. Question

7x2 – 54x + 99 = 0
4y2 – 16y + 15 = 0

Ans: 1
7x2 – 54x + 99 = 0
X = 33/7, 3
4y2 – 16y + 15 = 0
Y = 3/2, 5/2
x > y

Directions:6-10) In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer.

6. Question

3X2 +21x +30 =0
5Y2+22y +21 =0

Ans: 5
3X2 +21x +30 =0
X = -5,-2
5Y2+22y +21 =0
Y = -3,-1.4
If x = y or relation cannot be established

7. Question

3x2– 20x + 32 = 0
2y2 – 19y + 44 = 0

Ans: 4
3x2– 20x + 32 = 0
x = 4,8/3
2y2 – 19y + 44 = 0
y = 4 ,11/2
x ≤ y

8. Question

7x – 4y = 40
8x + 8y = 8

Ans: 1
7x – 4y = 40
8x + 8y = 8
X= 4, Y = – 3.
x > y

9. Question

(2025X) 1/2 +3600= 0
(16)1/4 y + (512)1/3 = 0

Ans: 1
(2025X) 1/2 +3600= 0
X = 6400
2y+8=0
y =-8/2 =-4.
x > y

10. Question

15x2 + 68x + 77 = 0
3y2 + 29y + 68 = 0

Ans:  1
15x2 + 68x + 77 = 0
X = -7/3, -11/5
3y2 + 29y + 68 = 0
y= -4, -17/3
x > y

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