Question

(3x +7)square - 84x = (3x -7)Square

Answer 1

Answer:

Step-by-step explanation:

(3x + 7)² - 84x = 9x² + 42x + 49 - 84x = 9x² - 42x + 49 = (3x - 7)²

Answer 2

Answer:

$(3x - 7) ^{2}$