Math Test Grade 3 quiz
数検3級
Practice questions
Factor x² + 7x + 12.
- (x+3)(x+4)
- (x+2)(x+6)
- (x+4)(x+3)
- (x+3)(x+5)
Factor x² - 6x + 9.
- (x-3)²
- (x-3)(x+3)
- (x-9)(x+1)
- (x+3)²
Expand (3x + 2)².
- 9x²+6x+4
- 9x²+12x+6
- 9x²+12x+4
- 9x²+4x+4
A coin is tossed 3 times. What is the probability that all of them are heads?
- 1/8
- 1/6
- 3/8
- 1/4
Factor x² - 16.
- (x+4)²
- (x-4)(x+4)
- (x-8)(x+2)
- (x-16)(x+1)
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