Question

PLS I NEED THAT HELP REALLY BADLY!!!

Answer 1

85

We are asked to evaluate (m² + 5), wherein m = -2 & n = -4,

Plugging in the values given,

• 
  `(m {}^(4) + 5) - n {}^(3) =( ( - 2) {}^(4) + 5) - ( - 4) {}^(3) \\`
• 
  `= (16 + 5) - ( - 64)`
• 
  `= 21 + 64`
• 
  `= 85`

Therefore, 85 is the required answer.

Answer 2

85

Explanation:

In order to evaluate the expression:

`\sf (m^4 + 5) - n^3`

with the given values m = -2 and n = -4:

Substitute the values of m and n into the expression:

`\sf \begin{aligned} (m^4 + 5) - n^3 &=\sf ((-2)^4 + 5) - (-4)^3 \\\\ &= \sf (16 + 5) - (-64) = 21 + 64 \\\\ &=\sf 85 \end{aligned}`

So, when m = -2 and n = -4, the value of the expression:
`\sf (m^4 + 5) - n^3 \textsf{ is 85.}`