28. Simplify: (x+3) ^2- (x-3)^2
Answers
Answered by
2
Answer:
(x+3)^2 - (x-3)^2
Let x+3=a and x-3=b
So the expression becomes
a^2 +b^2
=(a+b)(a-b)
={x+3+x-3}{x+3-(x-3)}. [Putting the value]
=2x*6
=12x
Answered by
1
Answer:
12x
Step-by-step explanation:
(x+3)² -(x-3)²
x²+9+6x -x²-9x+6x
12x
Attachments:
Similar questions