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finlep [7]
3 years ago
13

What are the solution(s) to the quadratic equation x2 – 25 = 0?

Mathematics
2 answers:
DENIUS [597]3 years ago
8 0
X^2 - 25 = 0
Add both sides by 25
x^2 = 25
Take the positive and negative square root.

x = 5
OR
x = -5

Have an awesome day! :)
Amiraneli [1.4K]3 years ago
4 0

Answer:

there are two solutions are x = (+5) and x = (-5)

Step-by-step explanation:

The given quadratic equation is x² - 25 = 0

Now we can get the solutions of this equation by zero factors.

[ since (a² - b²) = ( a-b ) ( a+b ) ]

so x² - 25 = (x-5) (x+5)

( x-5 ) = 0 ⇒ x = 5

or x + 5 = 0 ⇒ x = -5

Therefore, there are two solutions are x = (+5) and x = (-5)

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Answer:

10. 7n - 1 < -8

Isolate the variable, n. Do the opposite of PEMDAS. Treat the < as equal sign, what you do to one side, you do to the other. First, add 1 to both sides:

7n - 1 (+1) < - 8 (+1)

7n < - 8 + 1

7n < - 7

Isolate the variable, n. Divide 7 from both sides:

(7n)/7 < (-7)/7

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n < -1 is your answer.

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Combine like terms, then isolate the variable, v. First, add -7v and 4v together.

3 > (-7v + 4v)

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v > -1 is your answer.

~

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3 years ago
True or false domain,first element and y-value all have the same meaning
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The answer is false. :) and do u need points to ask questions?
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Step-by-step explanation:

Isnt the formula for ΔKE = 0.5m*v^2???

Im not going to use that formula you gave me, its wrong.

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im guessing?

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