pls only do this if yk how to bc i’m giving best answer brainliest ! solve the equation : -10x-47=-x^2+1 to the nearest te

Question

pls only do this if yk how to bc i’m giving best answer brainliest !

solve the equation :
-10x-47=-x^2+1 to the nearest tenth

thank you :))

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Gabriella 1 week 2021-11-19T05:02:02+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-11-19T05:03:31+00:00

    Answer:

    x=-3.5, x=13.5

    Step-by-step explanation:

    -10x-47=-x^2+1

    switch sides

    -x^2+1=-10x-47

    add 47 to both sides

    -x^2+1+47=-10x-47+47

    simplify

    x^2+48=-10x

    add 10x to both sides

    -x^2+48+10x=-10x+10x

    simplify

    -x^2+10x+48=0

    solve with the quadratic formula

    a=-1, b=10, c=48:

    x=-10±√10²-4(-1)48/ 2(-1)

    (you can plug this into a calculator or use PEMDAS to solve)

    (solve it twice: use – once, and + the second time)

    answer:

    x=-3.5, x=13.5

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