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OpenStudy (anonymous):
Simplify, [(x+7)+4][(x+7)-4]
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OpenStudy (ash2326):
@Mathmater do you know what's \[(a+b)(a-b)\]
OpenStudy (anonymous):
Yes, but the +4 and -4 are making confusing for me.
OpenStudy (anonymous):
@ash2326 ^^^^Read
OpenStudy (ash2326):
here a= x+7 b=4
OpenStudy (anonymous):
I was over thinking it thanks
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OpenStudy (ash2326):
welcome=D
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