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Aneli [31]
3 years ago
6

What is the completely factored form of of this polynomial 81x^4 - 16y^4​

Mathematics
1 answer:
Tasya [4]3 years ago
5 0

Step-by-step explanation:

81x⁴ - 16y⁴

(9x²)² - (4y²)²

(9x² + 4y²)(9x² - 4y²)

(9x² + 4y²)(3x + 2y)(3x - 2y)

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Texas chic. Next question
Maksim231197 [3]
When u have an outlier, u want to use the median.....in this case, the median is 4
4 0
3 years ago
Helppppppppppppppppppppppppppppppppppppppppp
mojhsa [17]

<u><em>Answer:</em></u>

<u><em>$55.93 or rounded up is $56</em></u>

<u><em>Division</em></u>

<u><em>First, we would divide 15.98 by 2 to see how many dollars would a bag cost.</em></u>

<u><em>15.98 divided by 2 = $7.99</em></u>

<u><em>Multiplication</em></u>

<u><em>Then, we would multiply by 7 to see how may dollars would it cost for 7 kg bag</em></u>

<u><em>7.99 times 7 = 55.93</em></u>

<u><em>Round-up</em></u>

<u><em>If we round it up, we get $56.</em></u>

<u><em>Request</em></u>

<u><em>Please give me brainliest :)</em></u>

6 0
2 years ago
Read 2 more answers
17) please help with this question!!!<br> BraiNLIEST AND 20 POINTS :)
valentinak56 [21]

Answer:

A

Step-by-step explanation:

8 gallons of regular gas with 10% and 2 gallons with 85%

8 x 10 =80%

2 x 85 =170%

170+80=250%

10 gallons each with 100%, so 10 x 100 =1000%

250% of 1000% = 1/4 or 25% ethanol

Hope this helps!

4 0
3 years ago
Expand (3x+7)(3x-7) =
saveliy_v [14]

Answer:

9 {x}^{2}  - 49

Step-by-step explanation:

Do FOIL, first outside inside last

3x × 3x = 9x^2

3x × -7 = -21x

7 × 3x = 21x

7 × -7 = -49

9 {x}^{2}   - 21x + 21x - 49 \: midde \: cancels \: each \: other \: out

So it would just be 9x^2 - 49

8 0
3 years ago
Read 2 more answers
Find the surface area of the triangular prism
ArbitrLikvidat [17]

Answer:

168.43524

Step-by-step explanation:

A=ah+bh+ch+1

2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=7·6+7·6+7·6+1

2·﹣74+2·(7·7)2+2·(7·7)2﹣74+2·(7·7)2﹣74≈168.43524

5 0
3 years ago
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