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3 years ago

Solve quadratic formula x-2x-15=0 the first x is squared

Mathematics

2 answers:

solniwko [45]3 years ago

8 0

$x^2-2x-15=0\\
x^2-5x+3x-15=0\\
x(x-5)+3(x-5)=0\\
(x+3)(x-5)=0\\
x=-3 \vee x=5
$

Oduvanchick [21]3 years ago

6 0

You said that x² - 2x - 15 = 0 .

You could factor the left side:

(x + 3) (x - 5) = 0

This equation is true if either of the factors is zero.

First factor:
x + 3 = 0
<u>x = -3</u>

Second factor:
x - 5 = 0
<u>x = 5</u>

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2 years ago

analyze this situation and determine how much cookie dough is "wasted" when 3-inch cookies are cut. then have each team member c

Cerrena [4.2K]

Answer:

The result is the same.

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I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

Given the information:

square 12 inches wide
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Hence we can find some information:

The area of the square is: $12^{2} = 144$ square inches
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3 years ago

Divide a24 - a18 + a12 by a6.

AnnZ [28]

24a-18a+12a is equal to 18a
hence, divide it by 6a
so you get 3a :)

3 0

3 years ago

What is the factored form of n2 – 25? (n – 25)(n – 1) (n – 5)(n + 5) (n + 5)(n + 5) (n – 25)(n + 1)

dexar [7]

Hi there!
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3 years ago

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2 years ago