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3 years ago

Is there a difference of squares in 4(4n^2-9)

1 answer:

7 0

You're standing there at the edge of the answer but you're afraid to jump in. Take a long hard look inside the parentheses. Stare at it and don't blink. Isn't 4n^2. a square ? Isn't. 9. a square ? Is that so ! Then isn't (4n^2 - 9) the difference of squares ! ? ! Go ahead. Take the plunge.

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Factor completely 3X^2 -25

Dominik [7]

In order to factor a polynomial, you have to find its roots

$x_1,\ x_2,\ldots,x_n$

So that you can factor it as

$p(x)=(x-x_1)(x-x_2)\cdots(x-x_n)$

So, in this case, we're looking for the solutions of

$3x^2-25=0 \iff 3x^2=25 \iff x^2 = \dfrac{25}{3} \iff x=\pm\sqrt{\dfrac{25}{3}}=\pm\dfrac{5}{\sqrt{3}}$

So, the polynomial can be written as

$3x^2-25 = \left(x-\dfrac{5}{\sqrt{3}}\right)\left(x+\dfrac{5}{\sqrt{3}}\right)$

5 0

3 years ago

Write your answer as a whole number and remainder.<br> 31+4=R

ki77a [65]

Answer:

Step-by-step explanation:

Add 31 and 4 to get 35.

8 0

3 years ago

jann designs a new logo for kim's website. kim pays jan $45 for 5 hours of work. How much money does kim pay jan per hour?

Amanda [17]

Jann pays Kim $9 an hour

5 0

3 years ago

Read 2 more answers

Is -7 bigger than - 8

alina1380 [7]

Hey!

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Answer:

True

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Explanation:

The smaller the negative number the bigger it is.

-7 > -8

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Hope This Helped! Good Luck!

8 0

3 years ago

Need help on this please

Ket [755]

In general, the dependent variable will be by itself on the left side of the equation. Its value depends upon that of the independent variable embedded in some expression on the right side.

3 0

2 years ago