Answer:
D
Step-by-step explanation:
x²=4
x=√4
X1=2
X2=-2
It's written as
Or
Hope this helps you
23
1c 2b 1d
did the math
c = - d
Multiply both sides by 2 to eliminate the fraction
2A = b(c + d) ← divide both sides by b
= c + d ← subtract d from both sides
- d = c