15-01-2020
Mathematics

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

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marcthemathtutor marcthemathtutor

15-01-2020

Answer:

x⁴ +2x³ + x² + 12x

Step-by-step explanation:

(x² + 3x)(x² - x +4)

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

= x^4 - x³ + 4x² + 3x³-3x²+12x

= x⁴ +2x³ + x² + 12x

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