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ANEK [815]
3 years ago
9

15 POINT QUESTION! Multiply and simplify. (4x−2)(3x^2−2x+1)

Mathematics
2 answers:
Romashka-Z-Leto [24]3 years ago
7 0
To answer this, first, you need to multiply the first bracket to the second bracket. Then, it will show like this: 4x(3x^2)-4x(2x)+4x(1)-2(3x^2)-2(-2x)-2(1)= 12x^3-8x^2+4x-6x^2+4x-2.
Then simplify them by adding or subtracting the same objects (same exponents and same variables). If they don't have the same objects, just let them be.
The final answer will be: -12x^3-14x^2+8x-2
Crazy boy [7]3 years ago
6 0
<span>The correct answer is 12x</span>³<span>-14x</span>²<span>+8x-2.

Explanation:
We use the distributive property:
4x*3x</span>² <span>- 4x*2x + 4x*1 - 2*3x</span>² <span>- 2*(-2x) - 2*1 = 12x</span>² <span>- 8x</span>² <span>+ 4x - 6x</span>² <span>+ 4x - 2.

Combining like terms, we have 12x</span>³<span>-14x</span>²<span>+8x-2.</span>
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Will mark brainliest!!
wlad13 [49]
<span>Solve the system

9x = 27-9y
20x=71-9y

Let's use the "elimination through addition/subtraction method.
Multiply the first equation by -1 so as to obtain +9y:

-9x = -27 + 9y
</span><span>20x=  71-   9y
--------------------

Add these 2 equations together:

</span>-9x = -27 + 9y
20x=  71-   9y
--------------------
<span> 11x = 44

Solve this for x:  x = 44/11 = 4.

Now find y by subst. 4 for x in either of the original equations.

Using the second equation:    </span><span> 

</span>20x=71-9y
20(4) = 71 - 9y
80-71 = -9y
9 = -9y.  Then y = -1.

The solution set is (4,-1).
7 0
3 years ago
a certain volcano has an elevation of 14,268 feet. a nerby oceanic trench has an elevation of 21,873 feet below sea level. find
EleoNora [17]

Answer:

8egg 8 g8vg8vg9g 9 g9g o h9 go g9gv9gv9 has to go on a small scale

3 0
3 years ago
a side of an equilateral triangle is 2/8cm long. Draw a picture that's shows the triangle. What is the perimeter of the triangle
Tom [10]
If the triangle is equilateral it means all the sides are the same length. 

A triangle has three sides. if each side is 2/8cm then the total perimeter if 3*2/8 = 6/8 = 3/4
5 0
2 years ago
The average mass of a certain type of microorganism is 2.4x10^-6 grams. What is the approximate total mass, in grams, of 5x10^3
Solnce55 [7]
I would go with answer b
6 0
3 years ago
En una ciudad se registró una temperatura de 12°c bajo cero a las 3:00 am si a las 7:00am del mismo dia la temperatura era tres
hjlf

Answer:

24°c

Step-by-step explanation:

Cuando se dice que la temperatura esta "mayor" significaria que esta aumentando y entorno subiendo a ser mas caliente. Siendo este el caso, si la temperatura a las 3:00 estaba a 12c bajo cero entonces a las 7:00 estaria a 24c. Esto es por que un aumento de tres vecesseria un aumento de 36 grados (12*3). 12c grados bajo cero seria un numero negativo y si sumamos estos numeros nos daria 24c grados.

-12 + 36 = 24

7 0
2 years ago
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