If x-7 =0
Then x =7
Substitute x=7 into f(x):
2(7)^2 - 11(7) + k
= (98-77)+k
= 21+k
Therefore k=-21 because 21+(-21)=0
Answer:
−8x^2−2x+13
collect the like terms then simplify
9) C.
10)A.
11) $75
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