Evaluate when x = 2 -X2 + 5x – 7

Question

Evaluate when x = 2
-X2 + 5x – 7

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Gerda 3 years 2021-08-31T16:18:18+00:00 1 Answers 6 views 0

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  1. Tryphena
    0
    2021-08-31T16:20:13+00:00
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    Answer:

    Step-by-step explanation:

    f(x)=x²-5x+7

    f(2)=2²-5.2+7=4-10+7=11-10=1

    f(-1)=(-1)²-5.(-1)+7=1+5+7=13

    f(1/3)=(1/3)²-5(1/3)+7=1/9-5/3+7=49/9

    ∴, f(2)-f(-1)+f(1/3)

    =1-13+49/9

    =58/9-13

    =-59/9

    mark be brainlest plss

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )