anyone know this I'm struggling

Answer
x - 1 + 6x^2
Step-by-step explanation:
Write al the sides together: 2x + 5 + x^2 - 6 + 4x^2 + 2x + x^2 - 3x
Then organize the terms: 2x + 2x - 3x + 5 - 6 + x^2 + x^2 + 4x^2
Simplify: 2x + 2x - 3x + 5 - 6 + x^2 + x^2 + 4x^2
2x + 2x -3x = 4x - 3x = 1x or x
x + 5 - 6 + x^2 + x^2 + 4x^2
5 - 6 = -1
x - 1 + x^2 + x^2 + 4x^2
x^2 + x^2 + 4x^2 = 2x^2 + 4x^2 = 6x^2
x - 1 + 6x^2