Question

phân tích đa thức thành nhân tử

\(x^2-8x +15\)

Answer 1

\(x^2-8x+15\)

\(=x^2-3x-5x+15\)

\(=x\left(x-3\right)-5 \left(x-3\right)\)

\(=\left(x-5\right)\left(x-3\right)\)

Answer 2

\(x^2-8x+15\)

\(=\left(x^2-3x\right)-\left(5x-15\right)\)

\(=x\left(x-3\right)-5\left(x-3\right)\)

\(=\left(x-3\right)\left(x-5\right)\)

Tham khảo nhé~