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Kamila [148]
3 years ago
10

How to factor x^3 - 4x^2 - 9x + 36 by grouping

Mathematics
2 answers:
const2013 [10]3 years ago
6 0

Answer:

(x-4) (x-3) (x+3)

Step-by-step explanation:

x^3 - 4x^2 - 9x + 36

Make 2 groups

x^3 - 4x^2            - 9x + 36

We can factor out x^2 from the first group and -9 from the second group

x^2 (x-4)    - 9(x-4)

Now factor out (x-4)

(x-4) (x^2 -9)

This may be an answer choice but we can still factor

(x^2 -9) is the difference of squares

(x^2-9) = (x-3) (x+3)

Replacing this

(x-4) (x-3) (x+3)

alukav5142 [94]3 years ago
4 0

Answer:

(x - 4)(x - 3)(x + 3)

Step-by-step explanation:

x³ - 4x² - 9x + 36

x²(x - 4) - 9(x - 4)

(x - 4)(x² - 9)

(x - 4)(x² - 3²)

(x - 4)(x - 3)(x + 3)

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3 years ago
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How many times heavier is a 8 1/4 pound fish than a 6 7/8 pound fish
icang [17]

Answer:

Step-by-step explanation:

Divide 8 1/4 by 6 7/8 and the answer will be 1.2 times heavier.

8 1/4 is 8.25 and 6 7/8 is 6.875 in decimal point and again:

8.25 divided by 6.875 is 1.2.

8 0
1 year ago
<img src="https://tex.z-dn.net/?f=x%2B0.08%2B3.21%5Cleq%2060" id="TexFormula1" title="x+0.08+3.21\leq 60" alt="x+0.08+3.21\leq 6
Rashid [163]
There is no solution to this, due to X can be equal anything. Hope this helps!
8 0
3 years ago
UHHHHH IM GONNA FAIL MATH YALL<br><br> Just answer it ig-?<br> I WILL MARK AS BRAINLIEST
tankabanditka [31]

Answer:

30.96 m^2

Step-by-step explanation:

Side length of the square is also the diameter of the semicircle so:

r = 0.5 * 12 m = 6 m

Since you want the area of the shaded area, you have to subtract the area of both semi circles from the area of the square:

Square Area - Semi Circle Area - Semi Circle Area = Shaded Region Area

(12 m * 12 m) - (0.5 * 3.14 * 6^2 m) - (0.5 * 3.14 * 6^2 m)

= 144 - 56.52 - 56.52

= 30.96 m^2

7 0
3 years ago
I have no clue what this is, never learned it yet
schepotkina [342]

Answer:

What are the choices?

Step-by-step explanation:

4 0
3 years ago
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