Question

answer me plss.......​

Answer 1

Step-by-step explanation:

9. c) product rule

10. c

a+b = -(-k)/1 =k

ab = 16

(a+b)²= a²+b²+2ab

k² = 32 +2×16 = 32 +32=64=8²

k²-8²=0

(k+8)(k-8)=0

k =+8 or -8

Answer 2

Step-by-step explanation:

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