Answer:
x = 
Step-by-step explanation:
Given
A = 4xy ( isolate x by dividing both sides by 4y )
= x
15x^2-15x+21x-21
15x^2+6x-21 is the answer
Answer:
90, 92, 94, 96
Step-by-step explanation:
Let the three consecutive even integers be x, (x + 2), (x +4) & (x + 6)

Hence, the three consecutive even integers are 90, 92, 94, 96.
The rhombus is shown in the diagram below
The length of one side of the rhombus is 5 units, hence all the other sides are also 5 units each.