Question

If a=3,b=−1 and c= −2,3ac-4c²/ 5ab​

Answer 1

Explanation:

Given expression,

`\\ \longrightarrow \qquad \sf (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 (3.( - 6)-4. 4 )/( 5.( - 3)) \\ \\`

`\longrightarrow \qquad \sf ( - 18-16 )/( - 15) \\ \\`

`\longrightarrow \qquad \sf ( - 34 )/( - 15) \\ \\`

`\longrightarrow \qquad \sf ( 34 )/( 15) \\ \\`