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Margarita [4]
3 years ago
11

How many real solutions does p^2-5p+7=0 have

Mathematics
1 answer:
jekas [21]3 years ago
8 0

Let's  work out the discriminant  b^2 - 4ac:-

D =  (-5)^2 - 4*1*7  =  25 - 28 = -3

A negative discriminant  shows that there are NO real solutions Answer

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For which values of the variables the following equality is true?
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Answer:

For The value of a = 0 and c = 0 , The given expression equality is true  

Step-by-step explanation:

Given expression as :

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Or, 3 a² + ac + 2 c - 6 a = ( a - 2 ) × ( 3 a - c )

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or,  0 + 2 ac + 0

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6 0
3 years ago
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Two numbers total 63 and have a difference of 31. Find the two numbers
Anastaziya [24]

Answer: 47 and 16

Step-by-step explanation:

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- Substitute the answer back into the equation

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Step-by-step explanation:

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