Question

using identities find the product of ( 2x² + 5x + 1 ) ( 2x² + 5x – 1 )​

Answer 1

Answer:

Step-by-step explanation:

( 2x² + 5x + 1 ) ( 2x² + 5x – 1 )​

⇒((2x²+5x)+ (1)) ((2x² + 5x)-( 1))              (a+b) (a-b) = a² - b²

⇒(2x²+5x)² - 1²                               $(a+b)^{2}=$a ² +2ab +b²

⇒$4x^{4} +20x^{3} +25x^{2} -1$