a.) ( 4x^3 + 7x - 3) + (3 + 3 - x ) = 4x³+7x-3 + 3+3-x= 4x³ +6x+3b.) (7-x^2y)+( 2+2xy +4x^2y) = 7-x²y + 2+2xy+4x²y = 2xy + 3x²y + 9c.) ( 0,4x^n - 0,2y^n - 1) + ( 1/5 y ^n - 2/5x^n+2) = 0,4x^n - 0,2y^n - 1 + 1/5 y ^n - 2/5x^n+2 = 1a.) (2x^3 + 3x + 7) - (5x^3 - 4x +6) = 2x³ + 3x + 7 - 5x³ + 4x -6 = -3x³ + 7x +1b.) (2xy + 3,5x^2) - ( -1 1/2x^2 + 5xy) +10 = 2xy + 3,5x² +1 1/2x² - 5xy+10 =5x²-3xy + 10c.) -(4x-5x^2 - 9) - (- 5x^2 +4x +4) = -4x+5x² + 9 + 5x² -4x -4 = -8x+10x² +5d.) (y^4 + 2b^2y^2 + 4 by^3) - (- 3y^4 + 6by^3 + 13b^2y^2) = y⁴ + 2b^2y² + 4 by³ + 3y⁴ + 6by³ + 13b^2y² = 4y⁴ + 15b^4y² + 10by³
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a.) ( 4x^3 + 7x - 3) + (3 + 3 - x ) = 4x³+7x-3 + 3+3-x= 4x³ +6x+3
b.) (7-x^2y)+( 2+2xy +4x^2y) = 7-x²y + 2+2xy+4x²y = 2xy + 3x²y + 9
c.) ( 0,4x^n - 0,2y^n - 1) + ( 1/5 y ^n - 2/5x^n+2) = 0,4x^n - 0,2y^n - 1 + 1/5 y ^n - 2/5x^n+2 = 1
a.) (2x^3 + 3x + 7) - (5x^3 - 4x +6) = 2x³ + 3x + 7 - 5x³ + 4x -6 = -3x³ + 7x +1
b.) (2xy + 3,5x^2) - ( -1 1/2x^2 + 5xy) +10 = 2xy + 3,5x² +1 1/2x² - 5xy+10 =5x²-3xy + 10
c.) -(4x-5x^2 - 9) - (- 5x^2 +4x +4) = -4x+5x² + 9 + 5x² -4x -4 = -8x+10x² +5
d.) (y^4 + 2b^2y^2 + 4 by^3) - (- 3y^4 + 6by^3 + 13b^2y^2) = y⁴ + 2b^2y² + 4 by³ + 3y⁴ + 6by³ + 13b^2y² = 4y⁴ + 15b^4y² + 10by³