Help please Multiply. Identify the product as a perfect-square trinomial, a difference of squares, or neither.
(8y +9)(8y - 9) =
The product is a difference of squares

64y² - 81

Step-by-step explanation:

(8y +9)(8y - 9)

64y² - 72y + 72y - 81

64y² - 81

Explanation:

(8y + 9)(8y - 9) = 64y² - 81

the product is a difference of squares

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

250

step-by-step explanation: