Question

1)If A = x^2 - 2x +1,B = 3x^2 - 8x +4 and C =2x^2 + 3x -2 find A-B-C
2) If x = -2,find the value of x^3 - 3x^2 + 3x - 1
3) If m = 5 and n = -2,find the value of m^2 - 2mn + n^2

(pls give step by step solution with proper number)​

Answer 1

Answer:

solution is in the picture

Step-by-step explanation:

solution is in the picture