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1 year ago

What is the discriminant of the quadratic equation 2x² - x - 3=0?

Mathematics

1 answer:

Tamiku [17]1 year ago

6 0

The given quadratic equation is

$2 {x}^{2} - x - 3 = 0$

comparing with

${ax}^{2} + bx + c = 0$

We get ,

$a = 2 \\ b = - 1 \\ c = - 3$

formula :

$D = {b}^{2} - 4ac \\ \\ D = {( - 1)}^{2} - 4 \times 2 \times ( - 3) \\ \\ D = 1 - ( - 24) \\ \\D = 1 + 24 \\ \\D = 25.$

Discriminant of given quadratic equation is 25 .

option (B) 25 ✔

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Anvisha [2.4K]

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(If you get a zero that is adding or subtracting, you always need to write it twice but change the sign do they cancel out)

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g100num [7]

To solve this we are going to use the formula fro the force applied to a spring: $F=ks$
where
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Since we know the $F=ma$ , we can replace that in our formula and solve for $a$ :
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