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Murljashka [212]
3 years ago
13

Even if I have use bidmas I'm still confuse with this equation (-7i)(2+i)+(2i)(-7i)

Mathematics
1 answer:
zheka24 [161]3 years ago
5 0
Assuming "i" is an imaginary unit:
(-7i)(2+i)+(2i)(-7i)=\\
-14i+7+14=\\
21-14i
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6 0
3 years ago
Read 2 more answers
Integrate the following: ∫<img src="https://tex.z-dn.net/?f=5x%5E4dx" id="TexFormula1" title="5x^4dx" alt="5x^4dx" align="absmid
Fiesta28 [93]

Answer:

A. x^5+C

Step-by-step explanation:

This is a great question! The first thing we want to do here is to take the constant out of the expression, in this case 5. Doing so we would receive the following expression -

5\cdot \int \:x^4dx

We can then apply the power rule " \int x^adx=\frac{x^{a+1}}{a+1} ", where a = exponent ( in this case 4 ),

5\cdot \frac{x^{4+1}}{4+1}

From now onward just simplify the expression as one would normally, and afterward add a constant ( C ) to the solution -

5\cdot \frac{x^{4+1}}{4+1}\\ - Add the exponents,

5\cdot \frac{x^{5}}{5} - 5 & 5 cancel each other out,

x^5 - And now adding the constant we see that our solution is option a!

3 0
3 years ago
Read 2 more answers
CHECK MY ANSWERS SOMEONE
Galina-37 [17]

Option A is correct.

Step-by-step explanation:

We need ti identify the radius of circle.

The radius of circle is a length of the line from center of the circle to anywhere on the edge of circle. It is also shown in the figure attached.

From the given options, only FE is the line that goes from center of circle to the edge of circle. So, FE is the radius of the circle.

So, Option A is correct.

Keyword: Radius of circle

Learn more about Radius of circle at:

  • brainly.com/question/13096001
  • brainly.com/question/1952668
  • brainly.com/question/3055705

#learnwithBrainly

7 0
3 years ago
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