Question

if a=7 and b=2 find the value of . a·A-B. 2a+3b C.2ab d.(a-b)$x^{2}$

Answer 1

a) A-B
= 7-2
= 5

b) 2a+3b
=. 2*7+3*2
=. 14+6
=. 20

c) 2ab
2*7*2
28

d) (a-b)x^2
(7-2)x^2
5x^2