(3x^2+4y-5z^3)+(5y+2x^2)+(7x2-8y)+(4x^2-9y-5z^3)
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Ek Rekha Khand 7.5 sentimeter Kharcha
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3x²+4y-5z^3 +5y+2x²+7x²-8y+4x²-9y-5z^3
= 5x²-8y-10z^3
= 5x²-8y-10z^3
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