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ololo11 [35]
3 years ago
7

What is the equivelent to (2-5i)(-2+5i)?

Mathematics
1 answer:
Andreyy893 years ago
4 0
21+20i is the answer
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How is the pattern for a perfect square trinomial used to factor the trinomial?
anastassius [24]

Answer:

Step-by-step explanation:

We're going to try two things here.

First an example

x^2 + 10x + 25

If you divide the linear factor by 2 and square the result, you get the last number (25)

The pattern of a trinomial is

x^2 + 2b x + b^2

The factors are

(x + b)(x+ b)

Just divide the linear term by 2

7 0
3 years ago
An electrician needs 14/3 rolls of electrical wire to wire each room in a house. How many rooms can he wire if he has 28/3 rolls
11111nata11111 [884]

Answer:

An electrician needs 14/3 rolls of electrical wire to wire each room in a house. How many rooms can he wire if he has 28/3 rolls of wires?

sory

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3 years ago
What is the slope of the line graph above?
gayaneshka [121]
This slope is 1/2. It goes up 1 on the y axis and over 2 on the x axis
7 0
3 years ago
3+-1/1/3 the first half is 3+-1 the second half is 1/3
kolbaska11 [484]
\bf \cfrac{3\pm1}{\frac{1}{3}}\implies 
\begin{cases}
\cfrac{3+1}{\frac{1}{3}}\\\\
\cfrac{3-1}{\frac{1}{3}}
\end{cases}\\\\
-------------------------------\\\\

\bf \cfrac{3+1}{\frac{1}{3}}\implies \cfrac{4}{\frac{1}{3}}\implies \cfrac{\frac{4}{1}}{\frac{1}{3}}\implies \cfrac{4}{1}\cdot \cfrac{3}{1}\implies \cfrac{4\cdot 3}{1\cdot 1}\implies \cfrac{12}{1}\implies \boxed{12}
\\\\\\
\cfrac{3-1}{\frac{1}{3}}\implies \cfrac{2}{\frac{1}{3}}\implies \cfrac{\frac{2}{1}}{\frac{1}{3}}\implies \cfrac{2}{1}\cdot \cfrac{3}{1}\implies \cfrac{2\cdot 3}{1\cdot 1}\implies \cfrac{6}{1}\implies \boxed{6}
6 0
3 years ago
Andrews sandwich consists of a 20 g piece of cheese is 60 g piece of turkey into 30 g slices of bread what is the total weight o
LenKa [72]

Answer:

0.11 kilos

Step-by-step explanation:

3 0
3 years ago
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