Question

For what value of m, the polynomial (x+2) is a factor of x cube - 2mx square + 16
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Answer 1

Answer: m=5

Step-by-step explanation: putting the value of x= -2

Now,

X³-2mx²+16

= -2 - 2m(-2)²+16=0

= -2-2m×4+16=0

= -4m×20=0

= -4m= -20

= m= -20/-4

=. m= 5