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gogolik [260]
3 years ago
6

How do you do this problem? Solve by factoring or finding square roots. x^2-1=0

Mathematics
2 answers:
sp2606 [1]3 years ago
4 0
X² - 1 = 0
<u>   + 1  + 1</u>
      x² = 1
       x = <u>+</u>1
Serga [27]3 years ago
3 0
<span>use formula^:   a²-b²= (a-b)(a+b)
x²-1=0</span>
x²-1²=0
(x-1)(x+1)=0
x-1=0⇒ x₁=-1
x+1=0 ⇒x₂=1
Answer: x=+-1
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HELP! Simon invests in a medical company. He buys the stock at $189.35 and sells it for $167.78. What is the percent of decrease
myrzilka [38]
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3 0
3 years ago
GETS BRAINILIST!!!A class has 6 boys and 14 girls. What is the ratio in simplest form that compares number of boys to total numb
FinnZ [79.3K]

Answer:

3:10

Step-by-step explanation:

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6:20

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7 0
3 years ago
Read 2 more answers
The length of a shadow of a tree is 9 ft. The distance from the top of the tree to the tip of the shadow is 16 ft. what is the h
Margarita [4]
So for this, you'll be using the pythagorean theorem to solve for the height.

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7 0
3 years ago
Evaluate the expression -2cd if a = -8 b = 2 c = -5 d = 6
Elza [17]

Answer:

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Step-by-step explanation:

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5 0
2 years ago
Needs help answering
Savatey [412]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
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