Answer D and E
Step-by-step explanation:
Answer:
Factor out 20 from the expression.
Take 20 as common.
a = 5b-10
a+b = 26
(5b-10)+b = 26
b = 6
a= 5b + 10 = 40
its d
the options can be eliminated by using common sense.
sqrt(-4) = sqrt(4×-1) = sqrt(4)×sqrt(-1) = 2i
