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3 years ago

The square root of a number is -18. what is the other square root?

Mathematics

1 answer:

tigry1 [53]3 years ago

4 0

+18. A square root always has two answers, a positive and a negative

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Answer: 23

Step-by-step explanation:

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Simplify the given expression below 4/3-2i

ANTONII [103]

So-called simplifying, really means, "rationalizing the denominator", which is another way of saying, "getting rid of that pesky radical in the bottom"

$\bf \cfrac{4}{3-2i}\cdot \cfrac{3+2i}{3+2i}\impliedby \textit{multiplying by the conjugate of the bottom}
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\cfrac{4(3+2i)}{(3-2i)(3+2i)}\implies \cfrac{4(3+2i)}{3^2-(2i)^2}\implies \cfrac{4(3+2i)}{3^2-(4i^2)}\\\\
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recall\qquad i^2=-1\\\\
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3 years ago

Read 2 more answers

Which shape is always a rectangle?

meriva

Answer:

D. A square because it has 4 right angles.

Step-by-step explanation:

A square is a rectangle but a rectangle is not a square.

8 0

3 years ago

Part A: What is the value of 2x if 4x + 6 = 2x – 12?

xeze [42]

Answer:

Step-by-step explanation:

A) 4x + 6 = 2x - 12

Subtract 6 from both sides

4x + 6 - 6 = 2x - 12 -6

4x = 2x - 18

Subtract 2x form both sides

4x - 2x = 2x - 18 - 2x

2x = -18

B) 24 = 6x - 18

6x - 18 = 24

6x - 6*3 = 24

6(x - 3) = 24

Divide both sides by 6

$\frac{6(x - 3)}{6}=\frac{24}{6}\\\\$

x - 3 = 4

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3 years ago