Question

subtract b(b^2+b_7) +5 from 3b^2 -8 and find the value of expression if b = -3

Answer 1

Answer:

[b(b^2+b-7)+5]-[3b^2-8]

[-3(-3^2-3-7)+5]-[3×(-3^2)-8]

[-3(9-10)+5]-[27-8]

[-3(-1)+5]-[19]

[3]-[19]

(-16). ans