Question

Phân tích các đa thức sau thành nhân tử:

\(b,x^2+6x+5\)

\(c,x^2-7x+10\)

Answer 1

b/ (x + 1)(x + 5)

c/ (x - 5)(x - 2)

Answer 2

\(b,x^2+6x+5=x^2+x+5x+5=x\left(x+1\right)+5\left(x+1\right)=\left(x+1\right)\left(x+5\right)\)

\(c,x^2-7x+10=x^2-2x-5x+10=x\left(x-2\right)-5\left(x-2\right)=\left(x-2\right)\left(x-5\right)\)

Answer 3

a,(x+1)(x+5)

c, (x-5)(x-2)

hok tốt nhé bn

Answer 4

b) \(x^2+6x+5=x\left(x+1\right)+5\left(x+1\right)=\left(x+1\right)\left(x+5\right)\)

c) \(x^2-7x+10=x\left(x-2\right)-5\left(x-2\right)=\left(x-2\right)\left(x-5\right)\)