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dexar [7]
3 years ago
11

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

Mathematics
1 answer:
Strike441 [17]3 years ago
3 0

Answer:

x=-3.5, x=13.5

Step-by-step explanation:

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

<u>switch sides</u>

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

<u>add 47 to both sides</u>

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

<u>simplify</u>

x^2+48=-10x

<u>add 10x to both sides</u>

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

<u>simplify</u>

-x^2+10x+48=0

<u>solve with the quadratic formula</u>

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)

<u>answer:</u>

x=-3.5, x=13.5

<u></u>

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