Question

if 4xsquare - 6x-k is exactly divisible by x-3 then k

Answer 1

x-3=0
x=3

Put x=3 in 4x²-6x-k

4x²-6x-k=0
4(3)²-6(3)-k=0
4(9)-18-k=0
36-18=k
k=18

Answer 2

Hey user here is your answer....

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◆Given expression- 4x^2-6x-k

◆x-3=0
◆x=3

◆Put in given equation

◆4(3)^2-6(3)-k=0

◆36-18-k=0

◆18-k=0

◆k=18

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⭐️Hope it helps you⭐️

✌️Rohan ( Maths aryabhatta)✌️