Complete Question: Which of the following is an example of the difference of two squares?
A x² − 9
B x³ − 9
C (x + 9)²
D (x − 9)²
Answer:
A. 
.
Step-by-step explanation:
An easy way to spot an expression that is a difference of two squares is to note that the first term and the second term in the expression are both perfect squares. Both terms usually have the negative sign between them.
Thus, difference of two squares takes the following form: 
.
a² and b² are perfect squares. Expanding 
will give us 
.
Therefore, an example of the difference of two squares, from the given options, is .
can be factorised as 
.
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➷ 5 + 3 + 3 + 4 = 15
5/15 * 5/15 = 25/225
This can be simplified to 1/9
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HERE IS THE ANSWER (see the picture)
Answer:
A
Step-by-step explanation:
The equation 
describes the proportional relationship between variables x and y. In this equation, k is the coefficient of proportionality.
Consider all options:
A. For the equation
the coefficient of proportionality is
B. For the equation
the coefficient of proportionality is
C. For the equation
the coefficient of proportionality is
D. For the equation
the coefficient of proportionality is
Answer:How to Write 0.17 or 17% as a Fraction?
Decimal Fraction Percentage
0.2 20/100 20%
0.19 19/100 19%
0.18 18/100 18%
0.17 17/100 17%
Step-by-step explanation:
