Question

if a=3,b=−1 and c= −2,3ac-4c²/ 5ab​

Answer 1

Step-by-step explanation:

Given expression,

$\\ \longrightarrow \qquad \sf \frac{3ac-4c²}{ 5ab}$

Now, when a = 3, b = -1 and c = -2 we get,

$\\ \longrightarrow \qquad \sf \frac{3.3.( - 2)-4. {( - 2)}^{2} }{ 5.3.( - 1)}$

$\longrightarrow \qquad \sf \frac{3.( - 6)-4. 4 }{ 5.( - 3)}$

$\longrightarrow \qquad \sf \frac{ - 18-16 }{ - 15}$

$\longrightarrow \qquad \sf \frac{ - 34 }{ - 15}$

$\longrightarrow \qquad \sf \frac{ 34 }{ 15}$