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2 years ago

Which expression is equivalent to ( xy -6)2 for all values of x and y where the expression is defined?

Mathematics

2 answers:

Fofino [41]2 years ago

5 0

Answer:

xy^36

Step-by-step explanation:

hichkok12 [17]2 years ago

4 0

Answer:

( x y -6)² = x² y² - 12 xy + 36

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the expression ( x y -6)²

Apply formula (a-b)² = a² -2ab + b²

( x y -6)² = (xy)² - 2 × xy× 6 + (6)²

= x² y² - 12 xy + 36

( x y -6)² = x² y² - 12 xy + 36

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2 years ago

Please help in the question it should be if t=-6 when r =-2 its an error

Natasha2012 [34]

Answer:

r = - $\frac{12}{7}$

Step-by-step explanation:

Given that r varies inversely as t , then the equation relating them is

r = $\frac{k}{t}$ ← k is the constant of variation

To find k use the condition t = - 6 when r = - 2, then

- 2 = $\frac{k}{-6}$ ( multiply both sides by - 6 )

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when t = - 7, then

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2 years ago