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Determine the resulting polynomial: f(x)=2x+7 g(x)=-2x^2-8x+7 Find: f(x)cdot g(x) Answer Attemptiout of 2 square

Pergunta

Determine the resulting polynomial:
f(x)=2x+7
g(x)=-2x^2-8x+7
Find: f(x)cdot g(x)
Answer Attemptiout of 2
square

Determine the resulting polynomial: f(x)=2x+7 g(x)=-2x^2-8x+7 Find: f(x)cdot g(x) Answer Attemptiout of 2 square

Solução

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PauloElite · Tutor por 8 anos

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To find the resulting polynomial f(x) \cdot g(x) , we need to multiply the two given polynomials f(x) and g(x) .

Given:
f(x) = 2x + 7

g(x) = -2x^2 - 8x + 7


We will use the distributive property to multiply these polynomials:

f(x) \cdot g(x) = (2x + 7) \cdot (-2x^2 - 8x + 7)


Now, distribute each term in f(x) to each term in g(x) :

= 2x \cdot (-2x^2) + 2x \cdot (-8x) + 2x \cdot 7 + 7 \cdot (-2x^2) + 7 \cdot (-8x) + 7 \cdot 7


Calculate each product:

= -4x^3 - 16x^2 + 14x - 14x^2 - 56x + 49


Combine like terms:

= -4x^3 - 30x^2 - 42x + 49


So, the resulting polynomial is:

f(x) \cdot g(x) = -4x^3 - 30x^2 - 42x + 49
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