3ײ - ×+5 find f(×+1)
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Answer:
3x^2 + 5x +7
Step-by-step explanation:
f(x)= 3x^2 -x +5
then f(x+1) = 3(x+1)^2 - (x+1) + 5
= 3(x^2 + 2x + 1) - (x+1) + 5
= 3x^2 + 6x + 3 - x - 1 + 5
= 3x^2 + 5x + 7
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