3 years ago

Which value must be added to the expression x2 + x to make it a perfect-square trinomial?

Mathematics

2 answers:

exis [7]3 years ago

8 0

Answer is 1/4

using
(a+b)^2 = a^2 + 2 a b + b^2

so (x + 1/2)^2 = x^2 + 2 (1/2) (x) + 1/4 = x^2 + x + 1/4

Nataly [62]3 years ago

7 0

Answer:

Step-by-step explanation:

ik it

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A grid shows the positions of a subway stop and your house. The subway stop is located at (7, -6) and your house is located at (

Westkost [7]

$\bf \textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 7}}\quad ,&{{ -6}})\quad 
% (c,d)
&({{ -9}}\quad ,&{{ 5}})
\end{array}\qquad 
% distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}
\\\\\\
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lianna [129]

Answer: I know how to simplify the expression, the answer is –5.

Step-by-step explanation:

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3 years ago

Simplify -7 1/9 - (-9 1/2)

guajiro [1.7K]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

2. The nth term of a sequence is 4n+3. Alice says that the 10th term is double the 5th term Is she correct? Show how you decide.

Marina86 [1]

Answer:

Alice is incorrect, see below

Step-by-step explanation:

The 10th term is 4(10)+3=43

The 5th term is 4(5)+3=23

Therefore, Alice is incorrect because 23*2=46, and not 44.

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Likurg_2 [28]

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