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2 years ago

Kayla was asked to rewrite the polynomial expression x2-14x+49

Mathematics

1 answer:

stich3 [128]2 years ago

4 0

Answer:

(x-7)(x-7)

Step-by-step explanation:

this is a perfect square

x^2-14x+49

take the square of the first number,

X^2 = x times x

the sign of the second number

-14x= (-)

the square of the last number

49= 7x7

to check your work you foil it out

(x-7)(x-7)

x times x = X^2

x times -7= -7x

-7 times x = -7x

-7times -7= 49

then combine like terms

x^2-7x-7x+49 = x^2-14x+49

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$\bf \cfrac{x}{5}-\cfrac{x}{7}=3\impliedby 
\begin{array}{llll}
\textit{let's multiply both sides by }\stackrel{LCD}{35}\\
\textit{to do away with the denominators}
\end{array}
\\\\\\
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\\\\\\
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2 years ago

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UkoKoshka [18]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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