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3 years ago

Which is equivalent to (2-5i)(-2+5i)

Mathematics

2 answers:

lisov135 [29]3 years ago

8 0

$(2-5i)(-2+5i)=\\
-(2-5i)^2=\\
-(4-20i-25)=\\
-(-21-20i)=\\
21+20i$

Nadusha1986 [10]3 years ago

6 0

= -4 + 10i + 10i -25i^2 = -4 + 20i + 25 = 21 + 20i, because i^2 = -1.

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4x^2 + 36 / 4x × 1 / 5x

stich3 [128]

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3 years ago

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sdas [7]

Answer:

Step-by-step explanation:

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3 years ago

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djyliett [7]

Answer:

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100

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3 years ago

What is the solution to the equation 13 3/4 + x equals 7 1 / 4

Olegator [25]

Answer:

x=-6.5

Step-by-step explanation:

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3 years ago

A car travels 60km in 30 minutes. In how much time will it cover 100 km?

Daniel [21]

Answer:

About 40 Minutes, Or something close to that

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3 years ago

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