Answer:
b) 20, a) 14, c) 28, d)10
Step-by-step explanation:
b) 2a +3b ; a=7 and b=2
2(7) + 3(2)
14 +6
20
a) ab
(7)(2)
14
c)2ab
2(7)(2)
14(2)
28
d) (a-b)2
2a-2b
2(7)-2(2)
14-4
10
I was a bit confused at the question, but those were the answers that I got and the work that follow. Hope this helps! Good luck.
