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3 years ago

If f(x)=x+2 and g(x)=3x^2+7x find (f x g)(x)

Mathematics

1 answer:

jek_recluse [69]3 years ago

6 0

Answer:

3x³ + 13x² + 14x

Step-by-step explanation:

(f × g)(x)

= f(x) × g(x)

= (x + 2)(3x² + 7x)

= x(3x² + 7x) + 2(3x² + 7x) ← distribute parenthesis

= 3x³ + 7x² + 6x² + 14x ← collect like terms

= 3x³ + 13x² + 14x

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