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iren2701 [21]
3 years ago
6

10x + 12 = [2+3(2x-4)+1] Solve for x

Mathematics
1 answer:
pogonyaev3 years ago
3 0

Answer:

-21/4

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
3 years ago
Please Help ME!!
koban [17]

Answer:

One way streets make it harder to turn into business, also one way streets often are long and they can throw you off your course

Step-by-step explanation:

I hope this helps

3 0
3 years ago
PLEASEEEEE i don’t get it I know it’s easy i will give you the brainlest!
Vika [28.1K]

Answer:

h=2/ab

Step-by-step explanation:

4 0
3 years ago
Susan drove her car at a constant speed for 3 hours and went 174 miles.
m_a_m_a [10]
I’m not sure what the answer is
6 0
3 years ago
Jessica works at a nearby electronics store. She makes a commission of 9% on everything she sells. If she sells a laptop for $37
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You have to do 0.09 x 378.00 and you will get 34.02.

So basically the answer is 34.02
6 0
3 years ago
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