3.528571429
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Answer:
x^2 + 3x -1
Step-by-step explanation:
f(x) = 3x-2
g(x) = x^2+1
(f+g)(x) = 3x-2+x^2+1
Combine like terms
= x^2 + 3x -1
Answer:
SA = 384 in²
Step-by-step explanation:
Assuming we're finding surface area:
SA of top of large cube: 8(8) - 4(4) = 48 in²
SA of sides of large cube: 4(8)(8) = 256 in²
SA of exposed faces of small cube: 5(4)(4) = 80 in²
Total = 48 + 256 + 80 = 384 = ∑SA