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Ira Lisetskai [31]
3 years ago
11

Which of the following is a polynomial?

Mathematics
1 answer:
Akimi4 [234]3 years ago
5 0

Answer:

I believe c is the answer.

Step-by-step explanation:

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Q 1.) Expand using identities:<br>i. (a+2b)²<br>ii. (5x-3y)²<br>iii. (3a+4)(3a-4)(9a²+16)<br>​
Ganezh [65]

Step-by-step explanation:

#1.

(a + 2b)²

<em>Using identity (x + y)² = x² + 2xy + y², we get:</em>

= (a)² + (2b)² + 2 × (a) × (2b)

= a² + 4b² + 4ab

= a² + 4ab + 4b² Ans.

#2.

(5x - 3y)²

<em>Using identity (a - b)² = a² - 2ab + b², we get:</em>

= (5x)² + (3y)² - 2 × (5x) × (3y)

= 25x² + 9y² - 30xy

= 25x² - 30xy + 9y² Ans.

#3.

(3a + 4)(3a - 4)(9a² + 16)

<em>Using identity (x + y)(x - y) = x² - y², we get:</em>

= [(3a)² - (4)²][9a² + 16]

= (9a² - 16)(9a² + 16)

= (9a²)² - (16)²

= 81a⁴ - 256 Ans.

4 0
2 years ago
Find the value of x.<br> A. About 57.6<br> B. About 42.6<br> C. About 12.6<br> D. About 27.6
nordsb [41]

Answer:

about 27.6

Step-by-step explanation:

The sum of interior angles for this rectangle is 1080

119+140+124+6x+132+132+102 = 1080 add like terms

749 + 12x = 1080 subtract 749 from both sides

12x = 331 divide both sides by 12

x = 27.6 approximately

8 0
2 years ago
A drilling machine can drill 12 holes in 6 minutes. If the machine drills holes at a constant speed, it can drill ______ holes i
Lelu [443]
Probably 50 holes in 25 minutes
6 0
3 years ago
Read 2 more answers
A volleyball reaches its maximum height of 13 feet, 3 seconds after its served. Which of the following quadratics could model th
Anettt [7]
B and D.
I hope helps!!! 
6 0
3 years ago
Which percent is eguivalent to 2.5?<br><br> 1)2.5%<br> 2)25%<br> 3)250%<br> 4)2,500%
sertanlavr [38]

Answer: 250%

since, 100% = 100/100

250% = 250/100

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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