Question

multiply 4x-19 by 4x+19​

Answer 1

Given that,

(4x - 19)( 4x + 19)

Use the identity: (a+b)(a-b) = a^2 - b^2

i.e (4x)^2 - (19)^2

or, 16x^2 - 361

Answer 2

Answer:

16x^2  - 361 is the desired answer.

Step-by-step explanation:

(4x-19)*(4x+19)

this expression is in the form of

(a-b)(a+b)

hence it can also be written in the form of a^2 - b ^ 2

(4x)^2 - 19^2

=16x^2  - 361