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2 years ago

Hi! How do you solve this? Step by step??

Mathematics

2 answers:

Mars2501 [29]2 years ago

7 0

Answer:

Step-by-step explanation:

Substitue 3 for every x in the equation

10(3)-(3*3)(2*3)+(3)^2(2*3)

Multiply

30-(9)(6)+9(6)

30-54+54=30

Lerok [7]2 years ago

3 0

Answer:

=30

Step-by-step explanation:

Substitute the variable

10(3)- (3(3)) (2(3))+ 3^2 (2(3))

Multiply the numbers

10×3-(3×3)×(2×3)+3^2×(2×3)

10×3-9×6+9×6

Eliminate the opposites

10×3=30 *9×6+9×6 these are the opposites

<u>OR THERE'S ANOTHER WAY</u>

10x-(3x)×(2x)×x^2×(2x)

Remove unnecessary parenthesis

10x-3x×2x×x^2×2x

Calculate the product

10x-6x^2+2x^3

Use the commutative property to reorder the terms

2x^3-6x^2+10x

Substitute the variable

2×3^3-6×3^2+10×3

=30

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alexgriva [62]

Both integers have negative values

Explanation

Let

x and y represents the number

so, the options are

$\begin{gathered} +\text{ + +} \\ +\text{ + -} \\ -\text{ + +} \\ -\text{ +-} \end{gathered}$

a) Both integers have negative values Both integers

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c)One integer has a positive value, and one integer has a negative value

$\begin{gathered} -x+y\text{ or x-y} \\ the\text{ sign of the result depends on the greates absolute value, it means the answer will have the same of the bigger number( absolute value)} \end{gathered}$

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for example

$\begin{gathered} 8-5=3\text{ positive because 8 is the bigger} \\ 5-8=-3\text{ negative because (-8) is has the bigger absolute value} \end{gathered}$

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I hope this helps you

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11 months ago

If 3x = -36 then x = ?

Vanyuwa [196]

$3x=-36|:3\\x=-12$

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