Question

(4x+9) (4x-9) find the product by using property

Answer 1

The product of (4x + 9) and (4x - 9) is 16x² - 81.

Step-by-step explanation:

The product of the sum and difference of two numbers is the difference between the squares of the two numbers.

$(a+b)(a-b)=a^{2}-b^{2}$

Compute the value of (4x+9)(4x-9) using the above property as follows:

$(4x+9)(4x-9)=(4x)^{2}-(9)^{2}$

                          $=16x^{2}-81$

Thus, the product of (4x + 9) and (4x - 9) is 16x² - 81.