<span>Using the Triangle Inequality Theorem
</span><span>The sum of two side lengths of a triangle is always greater than the third side
</span>
first one: 6, 22 , 10
6 + 22 > 10 : yes
22 + 10 > 6 : yes
6 + 10 > 22 : No because 16 < 22
These 3 lengths could NOT be lengths of sides of a triangle
second one: 8 , 15 , 22
8 + 15 > 22 : yes
15 + 22 > 8 : yes
8 + 22 > 15 : yes
These 3 lengths could be lengths of sides of a triangle
Answer:
Second option
8 cm, 15 cm, 22 cm
a. 
b. x = ∛-1 and -3
<h3>How to expand the expression</h3>
a. Given
(x² + 2)²
First, we open up the bracket

Multiply through

Collect like terms

b. Let's factorize

Find the factors of 3 that are products of 4, they are 3 and 1
Use it to replace 4x as 3x and x

Let's make the expression two

Find the common factor

So,
and 
and x = -3
Thus, x = ∛-1 and -3
Learn more about factorization here:
brainly.com/question/25829061
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