Unit 5

Unit 5:

Q.1 Choice the correct option (A,B,C,D) ?

1. H. C. F of p3q – pq3 and p5q2 – p2q5 is:

(a) pq(p2 – q2)

(b) pq(p – q)

(c) p2q2(p – q)

(d) pq(p3 – q3)

2. L. C. M of a2 + b2 and a4 – b4 is:

(a) a2 + b2

(b) a2 – b2

(c) a4 – b4

(d) a – b

3. H. C. F of a2 – b2 and a3 – b3 is:

(a) a – b           (b) a + b           (c) a2 + ab + b2         (d) a2 – ab + b2

4. What should be added to x4 + 16 to make it a complete square?

(a) 8×2            (b) – 9×2            (c) 16×2            (d) 4×2

5. General form of linear equation is:

(a) ax + b = 0

(b) ax2 + bx + c = 0

(c) a + b = 0

(d) a + bx ≤ 0

6. Solution of equation = 7 is:

(a) {20}         (b) {26}          (c) {30}        (d) {42}

7. If the capacity “C” of an elevator is at most 1600 pounds, then:

(a) C < 1600

(b) C ≥ 1600

(c) C ≤ 1600

(d) C > 1600

8. |- x| is equal to:

(a) – x         (b) x2        (c) x        (d) ± x

9. General form of linear inequality is:

(a) ax + b < 0

(b) ax2 + bx +c < 0

(c) a + b < 0

(d) a + bx ≤ 0

10. If a < b or a = b or a > b, then this property is called:

(a) Trichotomy property               (b) Transitive property
(c) Closure property                     (d) Associative property

Q. 2 (Short Questions)

1.Find H. C. F 16a2b3, 48a3b4, 80a2b2

2.Find H. C. F by factorization: x2 + 5x + 6, x2 – 4x – 12

3.Define Linear Equation.

4.Solve the inequality 3(2x + 1) – 2(2x + 5) < 5(3x – 2)

5.Solve the inequality – 4 < 3x + 5 < 8

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