Question

What is the simplified value of (a-3)^2 - 2(a-3)(a+3)+(a+3)^2?

plz explain step by step​

Answer 1

Step-by-step explanation:

(a-3)^2 - 2(a-3)(a+3)+(a+3)^2

Now apply (A-B)^2

=((a-3)-(a+3))^2

=(a-3-a-3)^2

=(-6)^2

=36

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