Using the identity, (x + a) (x + b) = x^2 + (a + b)x + ab, find the following

Using the identity, (x + a) (x + b) = x² + (a + b)x + ab, find the following products:
(i) (x + 7) (x + 3)
(ii) (3x + 4) (3x – 5)
(iii) (p² + 2q) (p² – 3q)
(iv) (abc + 3) (abc – 5)

Solution:

Using the identity, (x + a) (x + b) = x² + (a + b)x + ab, evaluate the following:
(i) 203 × 204
(ii) 8.2 × 8.7
(iii) 107 × 93

Solution:

More Solutions:

• Divide: – 39pq^2 r^5 by – 24p^3 q^3r
• Divide: 9x^4 – 8x^3 – 12x + 3 by 3x
• Divide: 6x^2 + 13x + 5 by 2x + 1
• Divide: 6x^3 + x^2 – 26x – 25 by 3x – 7
• Divide: a^3 + 2a^2 + 2a + 1 by + a^2 + a + 1