Mathematics: Let f(x)=7x^3 −2x−12 and g(x)=−3x^3 -8x^2 +10x . what is the function rule for (f+g)(x) ? a.(f+g)(x)=4x^6 −8x^2 +8x−12 b.(f+g)(x)=4x^3 −12x^2 +8x−12 c.(f+g)(x)=4x^3−8x^2+8x−12 d.(f+g)(x)=4x^6−8x^2+12x−12

Let f(x)=7x^3 −2x−12 and g(x)=−3x^3 -8x^2 +10x

Ответ:

jakeSanT5737

15.03.2022

(f+g)(x) = f(x) +g(x)
= (7x^3 −2x−12) +(−3x^3 -8x^2 +10x)
= x^3(7 -3) +x^2(-8) +x(-2+10) +(-12)
= 4x^3 -8x^2 +8x -12

Corresponds to selection C.

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Ответ:

zahwaahmaf

08.01.2020

Mathematics

C.) cosA because sinC is to small and Sin B is to wide

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Let f(x)=7x^3 −2x−12 and g(x)=−3x^3 -8x^2 +10x . what is the function rule for (f+g)(x) ? a.(f+g)(x)=4x^6 −8x^2 +8x−12 b.(f+g)(x)=4x^3 −12x^2 +8x−12 c.(f+g)(x)=4x^3−8x^2+8x−12 d.(f+g)(x)=4x^6−8x^2+12x−12

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