X^2-8x+21
=x^2-2(4)(x) +16+5
=(x-4)^2+5
here a=1
h=4
k=5
Answer:
8.9
Step-by-step explanation:
If you think of 8.9 as 8.90, then it's obvious that 8.90 (or 8.9) is greater than 8.83.
Answer:
10
Step-by-step explanation:
Twice the sum of 3 and 1 is 8.
8 times two is 16.
16 divided by 2 is 8.
8 plus 2 is 10.
-2k - (-7)k
= -2k + 7k
= 5k
-7(p + 2) + 9(p - 4)
= -7p - 14 + 9p - 36
= 2p - 50
