3 years ago

-6c+x find the expression

Mathematics

1 answer:

Romashka [77]3 years ago

7 0

Answer:

https://www.khanacademy.org/math/algebra/introduction-to-algebra/alg1-writing-expressions/v/writing-expressions-1

Step-by-step explanation:

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Find the number that must be added to each expression to form a perfect square trinomial. Then write the trinomial as a binomial

maksim [4K]

<h2>Hello!</h2>

The answers are:

a) $\frac{49}{4}$

b) $(x+\frac{7}{2})^{2}$

First, we need to know that for this case:

$a=1\\2ab=7$

So,

$b=\frac{7}{2}$

$b^{2} =(\frac{7}{2})^{2}=\frac{49}{4}$

We must add $\frac{49}{4}$ to the expression in order to form a perfect square trinomial,

$x^{2} +7x+\frac{49}{4}$

Writing the trinomial as a binomial square:

$(x+\frac{7}{2})^{2}=x^{2}+2*\frac{7}{2}*x+(\frac{7}{2})^{2}=x^{2} +7x+\frac{49}{4}$

Have a nice day!

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Step-by-step explanation:

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PLEASE HELP!

Sveta_85 [38]

$\bf \textit{equation of a circle}\\\\ 
(x- h)^2+(y- k)^2= r^2
\qquad 
center~~(\stackrel{2}{ h},\stackrel{-5}{ k})\qquad \qquad 
radius=\stackrel{12}{ r}
\\\\\\\
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