Dados os polinômios A = 5X ² - 3X + 4 e B = 2X ² + 4X – 3, então A + B é igual a: *

a) 7X ² + 7X + 7
b) 7X ² - 7X – 7
c) 7X ² + X + 1
d) 7X ² - X – 1​
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