Answer: the total length of sides 1 and 2 of the triangle is 2x² + 4.
Explanation:
To find the total length of sides 1 and 2 of the triangle, we need to add the lengths of the two sides together.
Given:
Side 1: 3x² - 4x - 1
Side 2: 4x - x² + 5
To find the total length, we add the lengths of Side 1 and Side 2:
Total length = Side 1 + Side 2
Total length = (3x² - 4x - 1) + (4x - x² + 5)
We can combine like terms:
Total length = 3x² - 4x - 1 + 4x - x² + 5
Combining like terms gives:
Total length = (3x² - x²) + (-4x + 4x) + (-1 + 5)
Simplifying further:
Total length = 2x² + 4
Therefore, the total length of sides 1 and 2 of the triangle is 2x² + 4.