Limit x=E. (2x+3)” – 7/ 8x” – 1 Gimana jawabannya….?

(2x+3)(2x+3)
= 2x*+12x+9
jadi,
lim x>E = 2x*+12x+9 -7 / 8x* -1
lim x>E = 2x*+12x+2 / 8x* -1
lim x>E = [ (2x*/x*) + (12x/x*) + (2/x*)] / [(8x*/x*)- (1/x*)
= [ (2x*/x*) + (12/∞*) + (2/∞*)] / [(8x*/x*)- (1/∞*)]
=2 +0+0 / 8 -0
= 2/8
=1/4