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- 1. Multiple Choice
x2 - 9
(x + 3)2
(x + 3) (x - 3)
(x - 3)2
x + 3(x - 3)
- 2. Multiple Choice
x2 - 16
(x + 4) (x - 4)
(x + 8) (x - 2)
(x + 4)2
x + 4(x - 4)
- 3. Multiple Choice
4x2 - 25
(2x + 5) (2x - 5)
(2x - 5)2
(2x + 5)2
2x + 5(2x - 5)
- 4. Multiple Choice
25x2 - 36y2
5x + 6y(5x - 6y)
(5x + 6y) (5x - 6y)
(5x + 6y)2
(5x - 6y)2
- 5. Multiple Choice
4x2y2 - 1
(2 + xy) (2 - xy)
(2x + y) (2x - y)
(2xy + 1) (2xy - 1)
(2y + x) (2y - x)
- 6. Multiple Choice
64x2 - 81y2
(8x + 7y) (8x - 7y)
(8x + 9y) (8x - 9y)
(6x + 7y) (6x - 7y)
(6x + 9y) (6x - 9y)
- 7. Multiple Choice
9x2 - 16
3(2x + 3) (x - 2)
3(3x + 2) (x - 2)
(3x + 4) (3x - 4)
3(x + 2) (x - 2)
- 8. Multiple Choice
49x2 - 144y2
(7x + 16y) (7x - 16y)
(7x + 12y)2
(12x + 7y) (12x - 7y)
(7x + 12y) (7x - 12y)
- 9. Multiple Choice
x4 - 100y2
(x2 + 10y) (x2 - 10y)
(x + 10y) (x - 10y)
(x + 10y) (x3 - 10y)
(x3 + 10y) (x - 10y)
- 10. Multiple Choice
169x2y6 - 196w4z8
(13xy3 + 14w2z4) (13xy3 - 14w2z4)
(13xy2 + 14w3z4) (13xy2 - 14w3z4)
(13xy6 + 14w2z4) (13xy6 - 14w2z4)
(13x2y + 14w3z4) (13x2y - 14w3z4)
- 11. Multiple Choice
121x2y6z8 - 225w4
(11xy4z4 + 15w) (11xy2z4 - 15w)
(11x2y3z4 + 15w) (11x2y3z4 - 15w)
(11xy3z4 + 15w2) (11xy3z4 - 15w2)
(11xy3z + 15w2) (11xy3z3 - 15w2)
- 12. Multiple Choice
We can't factor using difference of two square this
25x2 - 51y2. Why?
Because 51 is not a perfect cubed number.
Because 51 is not a perfect squared number.
Because 25 is not a perfect squared number.
Because we can't factor using difference of two squares if it is addition sign.
- 13. Multiple Choice
We can't factor using difference of two square this
49x2 + 4y2. Why?
Because 4 is not a perfect cubed number.
Because 4 is not a perfect squared number.
Because 49 is not a perfect squared number.
Because we can't factor using difference of two squares if it is addition sign.
- 14. Multiple Choice
Which of these can factor using difference of two squares?
144x2 - 49y2
x2 + 4x - 12
100x2 + 20x + 1
14x - 16
- 15. Multiple Choice
Which one is false about the difference of two squares?
We can factor that it is addition sign.
We can factor that it is a perfect squared number (Example: x2, 25, 49)
Formula: a2 - b2 = (a + b) (a - b)
We can factor that it is minus sign.
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