Question Practice

Qn #645
$\lim _{{x}\rightarrow1}\frac{{x}^4-1}{x-1}=\lim _{{x}\rightarrow k}\frac{{x}^3-{k}^2}{{x}^2-{k}^2}=$, then find k
    ❓ Question: $\lim _{{x}\rightarrow1}\frac{{x}^4-1}{x-1}=\lim _... | TANCET Group Studies | Tancet Group Studies