Question

complete the factorization of following as completely as possible
a) 4(x+3)+m(x+3)
b) x(x-1)-5(x-1)
c) x²(x+7)+x(x+7)​

Answer 1

Step-by-step explanation:

a) 4(x+3)+m(x+3)

= (x+3) (4+m)

= x+3=0 ; 4+m=0

= x=-3 ; m=-4

b) x(x-1)-5(x-1)

= (x-1) (x-5)

= x-1=0 ; x-5=0

= x=1 ; x=5

c) x^2(x+7)+x(x+7)

= (x+7) (x^2+x)

= x+7=0 ; x^2+x=0

= x=-7 ; x^3=0

= x=-7 ; -x^3

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