Answer:
D = -6
Step-by-step explanation:
divide -5 by each side of the equation
Here a = 2, b = -2, c = -1
b^2-4ac = (-2)^2 - 4(2)(-1)
= 4 +8
= 12
Answer:
5 is the constant since it doesn't have any variable with it
Step-by-step explanation:
Hope this helps!
Answer:
x = 5, x = -5
Step-by-step explanation:
First, you can notice both terms of the equation are divisible by 2, so you can factor it out to get:
2(x^2 - 25) = 0
You can recognize the expression x^2 - 25 as the special product for the difference of squares, so it would be factored into (x + 5)(x - 5). When we plug it in we get:
2(x + 5)(x - 5) = 0
Now, we can use the zero-product property to get two equations:
x + 5 = 0
-and-
x - 5 = 0
Solving them both we get:
x = 5, x = -5
Answer:
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Step-by-step explanation:
