Which equation has two real solutions? A. x^2-4=0 B. x-4=0 C. x^2-4=0 D. x+4=0
1 answer:
Answer:
A and C (they are same equation)
x^2-4=0
x^2=4
x can be 2 and -2
2^2=4
-2^2=4
Step-by-step explanation:
prove
b.
x-4=0
X=4 (one solution)
d.
x+4=0
X=-4 (one solution)
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