Question

Q=2u2 - 5 (d) Find the value of Q when u=-3

Answer 1

Answer:

13

Step-by-step explanation:

13 is the right answer

Answer 2

Answer:

Down below

Step-by-step explanation:

$Q=2u^2-5\\u=-3\\Q=(2*-3)^2-5\\Q=(-6)^2-5\\Q=36-5\\Q=31$

Note: wasn't sure if it was $2u^2$ or 2u*2. tell me and i will change it. this also may be wrong.