x+3 is a factor of x^3+10x^2+mx-54, then finf the value of m
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Answer:
the value of m in this equation is 3
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Answer:
x+3=0
x=-3
bu putting the value of x in the expression
x^3+10x^2+mx-54=0
(-3)^3+10*(-3)^2+m*(-3)-54=0
-27+10*9-3m-54=0
-27+90-3m-54=0
-3m+9=0
-3m=-9
by cancelling the (-) sign
3m=9
m=3
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