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1. Factorize: 4x² - 25

A (2x - 5)(2x + 5)

B (2x - 5)²

C (2x + 5)²

D (4x - 5)(x + 5)

2. The mean of 5 numbers is 12. If one number is removed, the mean becomes 10. What is the removed number?

A 20

B 18

C 15

D 22

3. A triangle with sides 7 cm, 8 cm, and 15 cm:

A Cannot be constructed

B Can be constructed with a right angle

C Can be constructed as acute triangle

D Can be constructed as obtuse triangle

4. Which equation has solution set {3, -3}?

A √x = 3

B |x| = 3

C x² = 9

D Both B and C

5. Solve: |x + 3| = 0

A 3

B -3

C 0

D No solution

6. What is the slope of the line 7x - 14y = 28?

A 1/2

B 2

C -1/2

D -2

7. Which of the following conditions is sufficient to construct a unique triangle?

A Three sides (SSS)

B Two angles and a non-included side

C Two sides and a non-included angle

D Three angles

8. What is the value of logₕ(1) for any base h>0, h≠1?

A 0

B 1

C h

D Undefined

9. If two polygons are similar, their corresponding sides are:

A Equal

B Proportional

C Parallel

D Perpendicular

10. What is the slope of a vertical line?

A Undefined

B 0

C 1

D -1

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