Question

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)
(i) (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 1

${x}^{2} + 10x + 21$

$16x { }^{2} + 6x + 5$

$16x {}^{2} - 6x + 5$

$16x ^{2} + 4x + - 5$

$4 {x}^{2} + 8xy + 15 {y}^{2}$

$4 {a}^{4} + 14 {a}^{2} + 45$

$(xyz) {}^{2} - 6xyz + 8$

Answer 2

Answer:

Step-by-step explanation: