Question

Can anyone send me answer of all this in the picture

Answer 1

Step-by-step explanation:

(3x+7)²-84x =(3x-7)²

or,(3x+7)²-(3x-7)²=84x

or,(3x+7+3x-7)(3x+7-3x+7)=84x

or,6x × 14=84x

or,84x= 84x

or,x=84x÷84