3 years ago

Use square roots to solve theequation x2 = -121 over thecomplex numbers.

Mathematics

1 answer:

balandron [24]3 years ago

5 0

Answer:

x = ±11i

Step-by-step explanation:

x^2 = -121

Take the square root of each side

sqrt(x^2) = sqrt(-121)

sqrt(x^2) = sqrt (-1) *sqrt(121)

We know that the sqrt(-1) is i

x = i ( ±11)

x = ±11i

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(4a-3b) ^2<br><br><br> The last part represents squared

madam [21]

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Step-by-step explanation:it stays the same because there is no like terms

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3 years ago

A pizza has a 14-inch diameter. What is the approximate area of the pizza? USE 3.14 for π.

REY [17]

Answer:

Step-by-step explanation:

How approximate is approximate?

I'll give you an answer to 2 decimal places.

Area = pi * r^2

r = d/2

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2 years ago

Read 2 more answers

Two different ways to find the difference for 12-3

Gennadij [26K]

For this case we have:

way 1:
Common factor 3 in the expression:
$12-3 = 3 (4-1)

12-3 = 3 (3)

12-3 = 3 (9)$

Way 2:
Write the number 12 as the sum of 4 times 3:
$12-3 = (3 + 3 + 3 + 3) - 3
$
Then, for associative property:
$12-3 = 3 + 3 + 3 + (3 - 3)

12-3 = 3 + 3 + 3 + (0)

12-3 = 3 + 3 + 3

12-3 = 9$