Question

5x^2+2x+3=(a+1)x^2+bx+c Hallar a+b+c

Answer 1

5x^2 + 2x + 3 = (a + 1)x^2 + bx + c

5x^2 = (a + 1)x^2
5x^2 = (4 + 1)x^2
4 = a

2x = bx 
2 = b

3 = c

Piden a + b + c = 9