Answer:
b=− 3/4 =−1.333
b= 2/3=1.500
explanation
middle term, which is -1 .
-72 + 1 = -71
-36 + 2 = -34
-24 + 3 = -21
-18 + 4 = -14
-12 + 6 = -6
-9 + 8 = -1 That's it
Two real solutions:
b =(1+√289)/12=(1+17)/12= 1.500
or:
b =(1-√289)/12=(1-17)/12= -1.333
