Question

please help me in 2 answers​

Answer 1

Answer:

11..x+3=0

x=-3

kx^3+9x^2+4x-10=-22

k(-3) ^3+9(-3) ^2+4(-3) -10=-22

-27k + 9(9) +(-12) -10=-22

-27k+81-12-10=-22

-27k+81-22=-22

-27k+81=-22+22

-27k=0-81

k=-81/-27

k=3

12 don't know

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