Question

(3a-7)² = 9a² -_______+49​

plz show proper method.​

Answer 1

HOPE THIS HELPS YOU

PLEASE MARK THE BRAINLIEST

Answer 2

Step-by-step explanation:

(

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

is in the former of

$( {a - b})^{2} = {a}^{2} + {b}^{2} - 2ab$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {3a }^{2} + {7}^{2} - 2(3a)(7)$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = {9a}^{2} + 49 - 41a$