What is the value of b^2-4ac for the following equation 2x^2-2x-1=0

Mathematics

1 answer:

Eva8 [605]3 years ago

8 0

Here a = 2, b = -2, c = -1
b^2-4ac = (-2)^2 - 4(2)(-1)
= 4 +8
= 12

You might be interested in

Simplify: 30 - 23 × 3

gogolik [260]

The answer to this question would be 39..here is why:

First you multiply 23 x 3..because multiplication or division always comes before addition or subtraction.

Second, you get the product from 23 x 3 which is 69..and you subtract 30 from that.

Last, after you do that you get an over all answer of 39..

Hope this helps!!

4 0

3 years ago

How do I convert the letter in an answered equation into a number, for example the answer 8.50246E6

Pie

Answer:

1Step-by-step explanation:

1 + IS 1 AND ITS 1

6 0

2 years ago

Read 2 more answers

Please help with my next question in math.

Vesnalui [34]