упростите выражение
1. (3х^2-2x)+(-x^2+3x)
2. (4c^2-cd)-(10c^2+8cd)
3. (12m^2-7n-3mn)-(6mn-10n+14m^2)
4. (3n^3-2mn+4m^3)-(2mn+3n^ 3)
Решите уравнение
1. (5x^2-3)-(2x+5)=5x^2
2. x^2-(x+1)-(x^2-7x+32)=3
3. (y^3+3y-8)-(5y-y^3+7)=2y^3-2y-15
1. (3х^2-2x)+(-x^2+3x)
2. (4c^2-cd)-(10c^2+8cd)
3. (12m^2-7n-3mn)-(6mn-10n+14m^2)
4. (3n^3-2mn+4m^3)-(2mn+3n^ 3)
Решите уравнение
1. (5x^2-3)-(2x+5)=5x^2
2. x^2-(x+1)-(x^2-7x+32)=3
3. (y^3+3y-8)-(5y-y^3+7)=2y^3-2y-15
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