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C1 HELP

The quadratic equation 2x(2) + 5x + k = 0 has equal roots. Find the value of k.

Original post by Ramighanem99

The quadratic equation 2x(2) + 5x + k = 0 has equal roots. Find the value of k.

If it has equal roots, the value b^2-4ac must equal to 0.
Substitute b^2-4ac=0 with appropriate values in the quadratic

edit: grammar isn't my thing

(edited 9 years ago)

OP

Original post by C0balt

If it has equal roots, the value b^2-4ac must equal to 0.
Substitute b^2-4ac=0 with appropriate values in the quadratic

edit: grammar isn't my thing

Thank you!

Original post by Ramighanem99

Thank you!

Np! I just had exactly the same lesson today as well :tongue:

:tongue:

OP

Original post by C0balt

Np! I just had exactly the same lesson today as well :tongue:

:tongue:

Are you doing S1 yet? F*** it is hard!

Original post by Ramighanem99

Are you doing S1 yet? F*** it is hard!

No I'm currently doing C1 and M1 for normal maths, and FP1with D1 for Further maths. Will start S1 after D1.
I didn't like stats at GCSE though... D1 is crap as well. Easy but tedious and boring and repetitive :unimpressed:

:unimpressed:

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