2 answers:
Answer:
(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.
Step-by-step explanation:
Answer: x=2
Step-by-step explanation:
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