I need help with finding out if it’s a perfect square trinomial

Answer:
Yes,
Step-by-step explanation:
since it has the format of a² + 2ab + b². The format is expressed clearly in 64s² - 112s + 49, where 64 and 49 are perfect squares, and 112 is double the product of 8 and 7 which are the square roots of 64 and 49, respectively.