Преобразуйте в многочлен стандартного вида: (2a + 3b) + (5a - 1)

1) $(2a+3b)+(5a-1) = 2a+3b+5a-1 = (2a+5a)+3b-1 = 7a+3b-1$ 2) $(5a^3+2a^2)-(3a^2+5) = 5a^3+2a^2-3a^2-5 = 5a^3+(2a^2-3a^2)-5 = 5a^3-a^2-5$ 3) $(8a-7a^3)+(-a^2+3a^3+2) = 8a-7a^3-a^2+3a^3+2 = (-7a^3+3a^3)-a^2+8a+2 = -4a^3-a^2+8a+2$ 4) $-(x^3+4x)+(x-2x^3) = -x^3-4x+x-2x^3 = (-x^3-2x^3)+(-4x+x) = -3x^3-3x$ 5) $(6y^5-3y^4)-(-2y^4+y^5-y^2) = 6y^5-3y^4+2y^4-y^5+y^2 = (6y^5-y^5)+(-3y^4+2y^4)+y^2 = 5y^5-y^4+y^2$ 6) $(y^3-y^2)-(y^2-y^3)-(3y^3+y^2) = y^3-y^2-y^2+y^3-3y^3-y^2 = (y^3+y^3-3y^3)+(-y^2-y^2-y^2) = -y^3-3y^2$ 7) $12x^3-(5x^2+3x^3)+12x^2-3 = 12x^3-5x^2-3x^3+12x^2-3 = (12x^3-3x^3)+(-5x^2+12x^2)-3 = 9x^3+7x^2-3$ 8) $10a^5-7a^3-(-a^5+6a^2-8a^3)+a^2 = 10a^5-7a^3+a^5-6a^2+8a^3+a^2 = (10a^5+a^5)+(-7a^3+8a^3)+(-6a^2+a^2) = 11a^5+a^3-5a^2$ 9) $4x^2-7x^4-(2x^2-4x^4-x^3)+(-x^3+x^4) = 4x^2-7x^4-2x^2+4x^4+x^3-x^3+x^4 = (-7x^4+4x^4+x^4)+(4x^2-2x^2)+(x^3-x^3) = -2x^4+2x^2$ 10) $(2a^2-3ab+b^2)-(4a^2-6ab-2b^2)-2ab = 2a^2-3ab+b^2-4a^2+6ab+2b^2-2ab = (2a^2-4a^2)+(-3ab+6ab-2ab)+(b^2+2b^2) = -2a^2+ab+3b^2$