(х-7) :х2-14х+49 \х+7 при х=-13

Question

(х-7) :х2-14х+49 \х+7 при х=-13

Answer 1

(-13-7):(-13*2)-(14-(-13))+49/-13+7=
-20:(-26+186)/-6=-20:160/-6=-20*(-6/160)=-6/-8=3/4=0,75