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How many real solutions does the equation have? -x^2+9x-7

How many real solutions does the equation have? -x^2+9x-7
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4 votes
How many real solutions does the equation have?

-x^2+9x-7

User Grgur
by
8.5k points

1 Answer

5 votes
hello :
-x^2+9x-7 =0
delta = b²-4ac =9²-4(-1)(-7) = 81-28 = 53>0
two reals solutions
User Kadiatu
by
8.4k points
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