1.

Fill in the blanks.5) If factor of x²+2x - mx - 18 is x + 2 then m = ________​

Answer»

ANSWER:

LET x+2=0

x=-2

let x2+2x-mx-18=0

-2×-2+2×-2-m×-2-18=0

4-4+2m-18=0

2m-18=0

2m=18

m=18/2

m=9



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