Question

Three sides of the triangle are are 4x²+x-1, 2x²-3x+5 and -x²+4x+1. Find the perimeter of the triangle. Please show step by step.​

Answer 1

Answer:

5x² + 2x + 5

Step-by-step explanation:

Perimeter of a triangle = a + b + c

a = 4x²+x-1

b = 2x²-3x+5

c = -x²+4x+1

Therefore, perimeter = (4x² + x - 1) + (2x² - 3x + 5) + (-x² + 4x + 1)

= 4x² + 2x² - x² + x - 3x + 4x - 1 + 5 + 1

= 5x² + 2x + 5

Hence, perimeter of triangle is 5x² + 2x + 5

Hope this helps....