Answers

2014-11-20T22:32:03+05:30
(a+b)(a-b)=a^2-b^2
(18-x)(18+x)=324-x^2
                            hope you understood
1 5 1
y r u sad
Huh! Maths exam tmorrow.
:/
best of ;0 luck
Thanx a lott :)
  • Brainly User
2014-11-20T22:52:45+05:30
(a+b)(a-b)=a^2-b^2
where here a is 18 
and b is x
so answer is 324-x^2
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