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Sagot :
Solution:
Question 1.
- (x - 2)(x + 3)
- => x² + 3x - 2x - 6
- => x² + x - 6
Question 2.
- (x + 4)(x - 12)
- => x² - 12x + 4x - 48
- => x² - 8x - 48
Question 3.
- (x + 3)(x + 4)
- => x² + 4x + 3x + 12
- => x² + 7x + 12
Question 4.
- (x + 6)(x + 7)
- => x² + 7x + 6x + 42
- => x² + 13x + 42
Question 5.
- (x + 8)(x + 9)
- => x² + 9x + 8x + 72
- => x² + 17x + 72
Question 6.
- (x - 5)(x + 5)
- x² + 5x - 5x - 25
- => x² - 25
Question 7.
- (x + 3)(x - 3)
- => x² - 3x + 3x - 9
- => x² - 9
Question 8.
- (x + 10)(x + 10)
- => x² + 10x + 10x + 100
- => x² + 20x + 100
Question 9.
- (x - 2)(x + 12)
- => x² + 12x - 2x - 24
- => x² + 10x - 24
Question 10.
- (x + 4)(x - 3)
- => x² - 3x + 4x - 12
- => x² + x - 12
Question 11.
- (x + 5)(x + 2)
- => x² + 2x + 5x + 10
- => x² + 7x + 10
Question 12.
- (x - 3)(x - 4)
- => x² - 4x - 3x + 12
- => x² - 7x + 12
Question 13.
- (x + 7)(x - 7)
- => x² - 7x + 7x - 49
- => x² - 49
Question 14.
- (x - 6)(x + 3)
- => x² + 3x - 6x - 18
- => x² - 3x - 18
Question 15.
- (x + 10)(x - 5)
- => x² - 5x + 10x - 50
- => x² + 5x - 50
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