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Sečti mnohočleny
Sečti mnohočleny:
\large 0,7x^{2} y + \left \{3x^{2} + y^{2} - \left[ 2x^{2}y- \left( -x^ {2} + 4,3x^{2} y- y^{2}\right) \right] \right \}
= 0,7x^{2}y + 3x^{2}+y^{2} + 2,3x^{2}y\ – x^{2} + y^{2} =
\large = 3x^{2} y + 2x^{2} + y^{2}
= 0,7x^{2}y + 3x^{2}+y^{2} + 2,3x^{2}y\ – x^{2} – y^{2} =
\large = 2x^{2} y + 3x^{2}
= 0,7x^{2}y + 3x^{2}+y^{2} + 2,3x^{2}y\ – x^{2} – y^{2} =
\large = 3x^{2} y + 3x^{2}
= 0,7x^{2}y + 3x^{2}+y^{2} + 2,3x^{2}y\ – x^{2} – y^{2} =
\large = 3x^{2} y + 2x^{2}