Question

(3x +7)² -84x = (3x - 7)²​

Answer 1

Step-by-step explanation:

9x² + 49 + 42x - 84x = 9x² + 49 - 42x

9x² - 9x² + 49 - 49 + 42x + 42x - 84x = 0

0 = 0

Answer 2

Answer:

Hey sis! Happy bday!

Step-by-step explanation:

Oh ur bday is just after v's bday. That's so cool!

Btw tomorrow is my bday!

Have a great day!

Happy new year in advance!