oblicz sume kwadratów wyrażeń x+6 i x-6
(x+6)²+ ( x-6)²=
=x²+12x+36+x²-12x+36=
=2x²+72
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(x+6)²+ ( x-6)²=
=x²+12x+36+x²-12x+36=
=2x²+72