Evaluate when x = 9 and y = 10:
1 3
--x + ---y
2 4

SHOW ALL YOUR STEPS

its very easy

Step-by-step explanation:

=13-x-24y

=13-9-(10)24

=4-240

=236

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1