Use the identity (x + a) (x + b) = x2+ (a + b)x + ab to find the follo

1.	Use the identity (x + a) (x + b) = x2+ (a + b)x + ab to find the following products.(i) (x + 3) (x+ 7) (ii) (4x +5) (4x + 1)(iii) (4x −5) (4x − 1) (iv) (4x + 5) (4x − 1)(v) (2x +5y)(2x + 3y) (vi) (2a2 +9) (2a2+ 5) (vii) (xyz −4) (xyz − 2)
Answer» Use the identity (x + a) (x + b) = x² + (a + b)x + ab to find the following products. (i) (x + 3) (x + 7) (ii) (4x +5) (4x + 1) (iii) (4x − 5) (4x − 1) (iv) (4x + 5) (4x − 1) (v) (2x +5y) (2x + 3y) (vi) (2a² +9) (2a² + 5) (vii) (xyz − 4) (xyz − 2)

Use the identity (x + a) (x + b) = x2+ (a + b)x + ab to find the following products.(i) (x + 3) (x+ 7) (ii) (4x +5) (4x + 1)(iii) (4x −5) (4x − 1) (iv) (4x + 5) (4x − 1)(v) (2x +5y)(2x + 3y) (vi) (2a2 +9) (2a2+ 5) (vii) (xyz −4) (xyz − 2)

Answer»

Use the identity (x + a) (x + b) = x²
+ (a + b)x + ab to find the following products.

(i) (x + 3) (x
+ 7) (ii) (4x +5) (4x + 1)

(iii) (4x −
5) (4x − 1) (iv) (4x + 5) (4x − 1)

(v) (2x +5y)
(2x + 3y) (vi) (2a² +9) (2a²
+ 5)

(vii) (xyz −
4) (xyz − 2)