Question

tell me by solving in notebook

Answer 1

Hey
Here's the answer.

Answer 2

${x}^{2} + (a + b + c)x + ab + bc \\ = {x}^{2} + ax + bx + cx + ab + bc \\ = {x}^{2} + ax + cx + bx + ab + bc \\ = x(x + a + c) + b(x + a + c) \\ = (x + b)(x + a + c)$