Question 1139262
(a):


{{{A[1]+8(n-1)}}}, the general term of the sequence


{{{(14/2)(A[1]+A[1]+8(14-1))=966}}} and question asks for {{{A[1]}}}.




(b):


{{{4x^2-9x-9<=0}}}
Find that the solution is between and including the roots.
ROOTS:  {{{(9+- sqrt(81+4*4*9))/(2*4)}}}


{{{(9+- sqrt(225))/8}}}


{{{(9+- 15)/8}}}


{{{system(-3/4,to,3)}}}


{{{highlight(-3/4<=x<=3)}}}