Question

[Nguyễn Mai Linh]

1) x^2 + x - 6

2) x^2 - x - 6

3) x^2 + 2x - 48

4) x^2 - 2x -48

5) x^2 + x- 42

6) x^2 - x-42

Answer 1

[Hoàng Thị Ngọc Anh]

1) \(x^2+x-6=x\left(x-2\right)+3\left(x-2\right)=\left(x+3\right)\left(x-2\right)\)

2) \(x^2-x-6=\left(x-3\right)\left(x+2\right)\)

3) \(x^2+2x-48=\left(x-6\right)\left(x+8\right)\)

4) \(x^2-2x-48=\left(x-8\right)\left(x+6\right)\)

5) \(x^2+x-42=\left(x-6\right)\left(x+7\right)\)

6) \(x^2-x-42=\left(x-7\right)\left(x+6\right).\)

Answer 2

[๖ۣۜĐặng♥๖ۣۜQuý]

bài này tìm x hay tìm cực trị vậy