3 years ago

Factorise fully 9x^2+3x^3

Mathematics

1 answer:

storchak [24]3 years ago

4 0

Answer:

3x^2(3+x)

Step-by-step explanation:

9x^2+3x^3

3(3x^2+x^3)

3x^2(3+x)

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If the following system of equations was written as a matrix equation in the form AX = C, and matrix A was expressed in the form

IrinaVladis [17]

Answer: a-b+c+d =4

Step-by-step explanation:

The given system of equation is

$2x+8y=7\\4x-2y=9$

from this we have the following matrices

$A_1 =\begin{bmatrix}\\2 &8 \\ \\4&2 \\\end{bmatrix}\ ,X=\begin{bmatrix}\\x\\ \\y\\\end{bmatrix}\text{and}\ C=\begin{bmatrix}\\7\\ \\9\\\end{bmatrix}$

the given matrix A = $\begin{bmatrix}\\a &c \\ \\b &d \\\end{bmatrix}$

On comparing Matrix $A_1$ with Matrix A

$\begin{bmatrix}\\a &c \\ \\b &d \\\end{bmatrix}=\begin{bmatrix}\\2&8 \\ \\4 &-2 \\\end{bmatrix}$

we have the following values

a=2 ,b=4,c=8,d=-2

Thus a-b+c+d =2-4+8+(-2)=4

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3 years ago

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Solve 5√3 as the square root of a single number

Andreyy89

Answer:

/75

Step-by-step explanation:

As I couldn't take the radical symbol I used this - "/".

5 /3

If 5 has to come in the radical sign it has to be squared

So, /25 × /3

/25×3

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4 years ago

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WITCHER [35]

Answer:

Step-by-step explanation:

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3 years ago

72 grams equals how many miligrams

Liula [17]

72000...............

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4 years ago

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Which set is ordered greatest to least?

weeeeeb [17]

16% = 0.16

1/6 = 0.16666

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0.166 = 0.166

order from greatest to least:

1.6x10^6, 1/6, 0.166, 16%

Answer is D

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3 years ago