Answer:
Below.
Step-by-step explanation:
a. (x - √5)(x + √5)
= x(x + √5) - √5(x + √5)
= x^2 + √5x - √5x - 5
= x^2 - 5.
b. 10 - 3x^2
= (√10 - √3x) (√10 + √3x)
Answer:
List is {-2i, 2i, -4)
Step-by-step explanation:
This is a third order polynomial, so we expect three roots (solutions).
Note that we can factor this expression by grouping:
(x²)(x + 4) + (4)(x + 4) = 0, or
(x + 4)(x² + 4) = 0
The factor (x + 4) corresponds to the root/solution x = -4, and:
The other factor (x² + 4) corresponds to the roots/solutions x = 2i and x = -2i.
List is {-2i, 2i, -4)
Lol that’s why not I just got to tell
According to the number of cups, 564 people can be invited to the party.
Step-by-step explanation:
This is a simple question of cross multiplication
<u>DATA:</u>
<em>1. Total number of cups of yogurt is 423 cups</em>
<em>2. 1 serving =
th of a cup</em>
<em>3. Each guest gets
of a cup or 1 serving</em>
<em>4. Find out how many guests can be invited to the party,</em>
Cups : People
: 1
423 : p
<em>5. Cross multiply</em>
p = 423 x 1
3p = 423 x 4
p = 
p = 564
Therefore, according to the number of cups, 564 people can be invited to the party.
Key word: Multiplication
Learn more about multiplication at
#LearnwithBrainly
Answer:
19
Step-by-step explanation:
5*7 - 4*4
PEMDAS says multiply and divide first
35 - 16
Then add and subtract
19