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Answered

Let f(x)=3x²-x+5,find f(x+1)
a.3x²+5x+5
b.3x²+5x+7
c.3x²-c+9
d.3x²+5x+9

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Sagot :

GMARWIN098IN

Answer:

f(x + 1) = 3x² + 5x + 7 (Letter B)

Step-by-step explanation:

f(x) = 3x²-x + 5

f(x + 1) = 3(x + 1)² - (x + 1) + 5

= 3(x² + x + x + 1) - x - 1 + 5

= 3(x² + 2x + 1) - x - 1+5

= 3x² + 6x + 3-x-1+5

f(x + 1) = 3x² + 5x+7

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