Question

If z = -1 then the value of z² + 2 z + 7 *
a=10
b=6
c=4​

Answer 1

Answer:

6

Step-by-step explanation:

6 is the answer but why did you write value of a b and c

Answer 2

Answer:

put z = -1

(-1)²+2(-1)+7

1-2+7 = -1+7 = 6

b=6 is your answer

Step-by-step explanation:

Hope it helps!!