Question

For what value of 'k', x2 + 7x + (k + 1) polynomial zero is '1'.​

Answer 1

Answer:

k=-9

Step-by-step explanation:

given equation x^2+7x+(k+1)

and given equation have solution (zero) 1

then we substitute the value 1 in equation that will be equal to zero

i.e. (1)^2+7(1)+(k+1)=0

1+7+k+1=0

k+9=0

k=-9