Question

find all zero of 2 x 4 - 2 x 3 - 7 x 2 + 5 x + 6 if two of its zeros are 2 and -1​

Answer 1

Answer:

2*16 - 2*8 - 7*4 + 10 + 6

32 - 16 - 28 + 16

76 + 16

60

2*1 - 2* -1 - 7* 1 + 5* -1 + 6

2 +2 -7 - 5 + 6

4 -12 +6

-2

hope it may helpful