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vovikov84 [41]
3 years ago
6

(a + b - c )(a + b + c )

Mathematics
2 answers:
denis-greek [22]3 years ago
5 0

Answer:

a^2+b^2-c^2+2ab

Step-by-step explanation:

(a+b-c)(a+b+c)=a^2+ab+ac+ab+b^2+bc-ac-bc-c^2=a^2+b^2-c^2+2ab

Hope this helps!

harkovskaia [24]3 years ago
3 0

Answer:

a²+b²-c²+2ab

Step-by-step explanation:

<u><em>(x-y)(x+y)=x²-y²</em></u>

<em>[(a + b)</em> - c ][(a + b) + c )=

=(a+b)²-c²

=a²+2ab+b²-c²

=a²+b²-c²+2ab

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