Question

6- Calcule as multiplicações.
a) (x2 + 3x) - (x - 4)
b) (x+ 3). (x - 4)


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Answer 1

a) (x2 + 3x) - (x - 4)

x³-4x² +3x²-12x

x³ - x² - 12x

b) (x+ 3). (x - 4)

x²-4x +3x-12

x² - x - 12