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Zina [86]
3 years ago
7

The difference of the square of a number and 5 is equal to 4 times that number. Find the negative solution.

Mathematics
2 answers:
Alexeev081 [22]3 years ago
8 0

Answer:

x=-1 or x=5

Step-by-step explanation:

let the number be 'x'.

According to the statement given above:

x^2-5=4x

or

x^2-4x-5=0

Factorizing the quadratic equation for 'x'

x^2+x-5x-5=0

Taking common from the equation:

x(x+1)-5(x+1)=0\\(x+1)(x-5)=0\\(x+1)=0, (x-5)=0\\x=-1,x=5

The solution of the equation is x=-1 or x=5

ivann1987 [24]3 years ago
8 0

Answer:

its -1 because i know it

Step-by-step explanation:

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What is the value of x6+y2 when x equals 1 and y equals 11
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3 years ago
What is the mass of the 2.5 kilogram in mass in grams
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So to go from kilograms to grams, multiply by 1000:
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3 years ago
Read 2 more answers
The letters of the alphabet are written on cars and placed in a brown paper bag. What is the probability of drawing a vowel, rep
Oksanka [162]

Answer:

25 / 676

Step-by-step explanation:

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Again, we're told to replace the picked vowel, and pick another vowel, so that will once again be

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To get the final answer, we multiply both answers by each other

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