Question

grouping factor

x^3+5x^2+8x+40

Answer 1

x^3+5x^2+8x+40


(x^3+5x^2)+(8x+40)


x^2(x+5)+8(x+5)


(x^2+8)(x+5)


So x^3+5x^2+8x+40=(x^2+8)(x+5)

Answer 2

so you dont have to find a common factor?

Answer 3

oh wait nevermind 5 times 8 is 40

Answer 4

nope just factor by grouping