for what value of m is x^3-2mx^2+16 is divisible by x+2
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take that
X+2 = 0
x = -2
if x+2 is the factor of x³-2mx²+2 then x³-2mx²+2 if we fill x value
x³-2mx²+16 = 0
(-2)³-2m(-2)²+16 = 0
-8 -2m(4) + 16 = 0
8 - 8m = 0
8m = -8
m = -8/8
m = -1
X+2 = 0
x = -2
if x+2 is the factor of x³-2mx²+2 then x³-2mx²+2 if we fill x value
x³-2mx²+16 = 0
(-2)³-2m(-2)²+16 = 0
-8 -2m(4) + 16 = 0
8 - 8m = 0
8m = -8
m = -8/8
m = -1
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