3 years ago

PLS HELP PLS THIS IS URGENT PLS I WILL GIVE CROWN PLUS 40 POINTS PLSS

Mathematics

1 answer:

pshichka [43]3 years ago

6 0

8 can I have my brainliest plz

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Simplify. <br><br> −3x3(−2x2+4x−3)

stepladder [879]

Answer:

$-3x^3(-2x^2+4x-3)$ simplifies to $6x^5-12x^4+9x^3$

Step-by-step explanation:

Given expression $-3x^3(-2x^2+4x-3)$

We have to simplify the above expression,

Consider the given expression $-3x^3(-2x^2+4x-3)$

Multiply each term in brackets by $-3x^3$ , we get,

$-3x^3(-2x^2+4x-3)=-3x^3(-2x^2)-3x^3(4x)[-3x^3(-3)$

Solving further, using $x^n\cdot x^m=x^{n+m}$ we get,

$-3x^3(-2x^2)-3x^3(4x)[-3x^3(-3)=6x^5-12x^4+9x^3$

Thus, $-3x^3(-2x^2+4x-3)$ simplifies to $6x^5-12x^4+9x^3$

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3 years ago

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What is 5 3/5 - 4 1/10

Mariulka [41]

Answer:

3/2

Step-by-step explanation:

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2 years ago

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Tia cut a 4 meter 8 centimeter wire into 10 equal pieces. Martha cut 540 centimeter wire into 9 equal pieces. how much longer is

Minchanka [31]

Answer:

Mia piece is 19.2cm longer than Tia's piece.

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3 years ago

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While Akira was visiting her sister in Weston, she bought a toy rocket that was marked down 50% from an original price of $40. I

maw [93]

Answer:

me when I

Step-by-step explanation:

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3 years ago

What is the answer to this? i can’t figure it out.

Svetach [21]

9514 1404 393

Answer:

25 +0i

Step-by-step explanation:

The conjugate of a complex number is that number with the sign of the imaginary part reversed.

For z = -3+4i, its conjugate z* is -3-4i. The product of z and z* is ...

(-3 +4i)(-3 -4i) = -3(-3 -4i) +4i(-3 -4i)

= 9 +12i -12i -16i² = 9 +16 = 25

The real part of the product is 25; the imaginary part is 0.

(-3 +4i)(-3 -4i) = 25 +0i

_____

You may have noticed that (z)(z*) = |z|², the sum of the squares of the real and imaginary parts. It is always a non-negative real number.

8 0

2 years ago