Question

5c squared- d squared+3/2c - 4d...c= -1. d= -4​

Answer 1

For this case we have the following expression:

`5c ^ 2-d ^ 2 + \frac {3} {2} c-4d`

We must find the value of the expression when:

`c = -1\\d = -4`

Substituting we have:

`5 (-1) ^ 2 - (- 4) ^ 2 + \frac {3} {2} (- 1) -4 (-4) =\\5 (1) -16- \frac {3} {2} + 16 =\\5-16- \frac {3} {2} + 16 =\\-11- \frac {3} {2} + 16 =\\- \frac {25} {2} + 16 =\\\frac {-25 + 32} {2} =\\\frac {7} {2}`

Finally, the value of the expression is:

`\frac {7} {2}`

ANswer:

`\frac {7} {2}`