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15 questions
(7x-3y)2=
7x2-14xy+3y2
49x2+42xy+9y2
7x2-3y2
49x2-42xy+9y2
Ce lipsește din egalitatea? (2+x)2=4 +... +x2\left(2+x\right)^2=4\ +...\ +x^2(2+x)2=4 +... +x2
2x2x2x
4x4x4x
x2x^2x2
4x24x^24x2
Ce lipsește din egalitatea? (3x−y)2=9x2−... +y2\left(3x-y\right)^2=9x^2-...\ +y^2(3x−y)2=9x2−... +y2
3xy3xy3xy
6xy6xy6xy
6x6x6x
2xy2xy2xy
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