Question

en examen
$(x ^{4} + 5 x + 9x) - (x ^{3} + 4x ^{2} - 4$
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Answer 1

(x⁴ + 5x + 9x) - (x³ + 4x² - 4)

(x⁴ + 14x) - (x³ + 4x² - 4)

x⁴ + 14x - x³ - 4x² + 4

x⁴ - x³  - 4x² + 14x + 4

Eternamente axllxa