Question

Use suitable identities to find the following products: (3 - 2x) (3+2x)​

Answer 1

Answer:

(3-2x) (3+2x)

= 3(3+2x) - 2x(3+2x)

= 9 + 6x - 6 - 4x^2

= 9 - 4x^2

Answer 2

Using the algebric identity,

$\large{\bold { \boxed { \underline{\red{ (x + y)(x - y) = {x}^{2} - {y}^{2}}}}}}$

$\tt \: →(3 - 2x)(3 + 2x)$

$\tt \: →{3}^{2} - {2x}^{2}$

$\tt \: →9 - 4x {}^{2}$

More information:

(a + b)2 = a2 + 2ab + b2

(a - b)2 = a2 - 2ab + b2

(a + b)(a - b) = a2 - b2

(x + a)(x + b) = x2 + x(a + b) + ab

(a + b)2 = a2 + 2ab + b2

(a - b)2 = a2 - 2ab + b2

(a + b)(a - b) = a2 - b2

(a + b)3 = a3 +3a2b + 3ab2 + b3

(a - b)3 = a3 - 3a2b + 3ab2 - b3

$\bold \red{Celestial} \bold{Centrix}$