3 years ago

What is the value of 3x2 - 5xy + 5y2 for x = -6 and y = 2?

2 answers:

8 0

I assume you mean:
3x^2 -5xy + 5y^2.

Simply substitute the given values into the equation:

3(-6)^2 - 5(-6)(2) + 5(2)^2

=188

Naily [24]3 years ago

6 0

-36 +60 =24+20=44 answer is 44 unless the first x is a multiplication sign

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Fynjy0 [20]

So i believe you need to round the whole number, if so than 8 * 3 = 24 and 20 * 3 = 60

3 0

3 years ago

How do perform the equation x-(4x-2y)-5y

cluponka [151]

Answer:

-3x - 7y

Step-by-step explanation:

x - (4x - 2y) - 5y

x - 4x - 2y - 5y

Combine like terms

x - 4x = -3x

-2y - 5y = -7y

Now, we have our final answer:

-3x - 7y

7 0

2 years ago

Find the sum of the first 56 terms of the sequence {-8,-1, 6, ...}.

torisob [31]

Answer:

Step-by-step explanation:

S56=56/2[2(-8)+(56-1)7]

S56=10332

4 0

2 years ago

I need help with 8-13 I have 0 clue how to do it and I need to graduate soon

Darya [45]

Answer:-5

Step-by-step explanation:

4 0

2 years ago

Ellema knows that 1/5 written as a decimal is 0.2. How can Ellema use this information to find the decimal equivalent for 9/5 wi

Rus_ich [418]

Answer:

1.8

Step-by-step explanation:

0.2 times 5 is 1.8

3 0

2 years ago

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