Question

(2k+3)(2k-7)
Solve using identity

Answer 1

Answer:

4k2-4x-21 rrrrrrrrrrr

Answer 2

Answer:

Question:-

▪︎(2k+3)(2k-7)

Solve using identity

Using Identity:

(x+a)(x-b) = x² + (a-b)x - ab

Solution:

Here,

x=2k

a=3

b=7

So, the solution is;

(2k+3)(2k-7)

= (2k)² + (3-7)2k - (3×7)

= 4k² - 8k -21