Question

Find the product by using identity (4x+5)(4x-5)

Answer 1

Answer:

16 x 2−25

Step-by-step explanation:

Answer 2

Answer:

$16x^{2} - 25$

Step-by-step explanation:

$(4x+5)(4x-5)=(4x)^{2} - (5)^{2}$                                 $[(a+b)(a-b)=a^{2}-b^{2}]$

                          $=16x^{2} - 25$