Question

lim of x distance to 3[ x^4-81/2x^2-5x-3]​.




help me with this question please

Answer 1

Step-by-step explanation:

x^4-81=x^4-3^4 = (x2-3^2)(x2+9)= (x+3)(x-3)(x2+9)

2x2-5x-3

=2x2-6x+x-3=2x(x-3)+1(x-3=(2x+1)(x-3)

lim x-->3 (x+3)(x2+9)/(2x+1) =6×18/7=108/7=15.43