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Dennis_Churaev [7]
2 years ago
11

What should be added to x2 +xy+y2 to obtain 3x2 - 4xy - y2​

Mathematics
1 answer:
Alex787 [66]2 years ago
4 0

Answer:

2x² - 5xy - 2y²

Step-by-step explanation:

Subtract x² + xy + y² from  3x² - 4xy - y² to obtain the expression to be added

3x² - 4xy - y² - (x² + xy + y² ) ← distribute by - 1

=3x² - 4xy - y² - x² - xy - y² ← collect like terms

= 2x² - 5xy - 2y²

Thus

adding 2x² - 5xy - 2y² to x² + xy + y² gives 3x² - 4xy - y²

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Answer:

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Step-by-step explanation:

I got you

So to find the circumference of any circle we use the equation 2pi(r)

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Factor 20x2 + 25x – 12x – 15 by grouping. 1. Group terms with common factors. 2. Factor the GCF from each group. 3. Write the po
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<span>Step 1:
</span>
<span> (((22•5x2) + 25x) - 12x) - 15)))

</span>
<span>The first term is, <span> <span>20x2</span> </span> its coefficient is <span> 20 </span>.
The middle term is, <span> +13x </span> its coefficient is <span> 13 </span>.
The last term, "the constant", is <span> -15



</span></span>
<span>step 2 above,  -12  and  25 
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Step-4 : Add up the first 2 terms, pulling out like factors :
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              Add up the last 2 terms, pulling out common factors :
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Step-5 : Add up the four terms of step 4 :
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2 years ago
Read 2 more answers
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