Mathematics: If 3x(x-a)+x=3x^2-5x,where a is aconstant,find a.

If 3x(x-a)+x=3x^2-5x,where a is aconstant,find - id33251547097, eboneecook8704

Ответ:

awesomegrill

31.07.2019

Distribute $3x$ into $(x-a)$ . $\begin{aligned} 3x(x-a)+x& =3x^2-5x \\ 3x^2 - a3x + x & = 3x^2 - 5x \end{aligned}$ subtract $3x^2$ from both sides. $\begin{aligned} 3x^2 - a3x + x & = 3x^2 - 5x \\ - a3x + x & = -5x \end{aligned}$ subtract $x$ from both sides. $\begin{aligned} - a3x + x & = -5x\\ - a3x & = -5x -x \\ - a3x & = -6x \end{aligned}$ divide both sides by $-3x$ $\begin{aligned} - a3x & = -6x \\ \frac{a(-3x)}{-3x} & = \frac{-6x}{-3x} \\ a & = 2 \end{aligned}$ a = 2

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Ответ:

waltzcampbell

25.02.2022

Mathematics

r=0

Step-by-step explanation:

10r-5r=3r-8r

We move all terms to the left:

10r-5r-(3r-8r)=0

We add all the numbers together, and all the variables

10r-5r-(-5r)=0

We add all the numbers together, and all the variables

5r-(-5r)=0

We get rid of parentheses

5r+5r=0

We add all the numbers together, and all the variables

10r=0

r=0/10

r=0

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If 3x(x-a)+x=3x^2-5x,where a is aconstant,find a.

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