Question

Which of the following holds true for the given identity?
21. (x - a) (x + b)

1. x² + (a + b) x +ab
2. x² + (a ‒ b) x ‒ ab
3. x² ‒ (a ‒ b) x ‒ ab
4. x² ‒ (a + b) x +ab
(1 point)

22. (x + 5) (x + 7) = _______

1. x² + 12x + 35
2. x² +12x ‒35
3. x² ‒12x ‒35
4. x² ‒12x +35
(1 point)

Answer 1

Answer:

a. 3 is correct

b. 1 is correct

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