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March 4, 2015

March 4, 2015

Posted by **-Untamed-** on Monday, December 5, 2011 at 8:13pm.

i) real and distinct roots

ii)real and equal roots

iii)non-real roots

This is what I did to solve for A.

5x^2-10x+d = 0

b^2-4ac = 0

(-10)^2-4(5)(d) = 0

100-20d = 0

-20d = -100

d = 5

Need help with others.

- Math -
**Anonymous**, Tuesday, December 6, 2011 at 10:15amClose. Actually, you solved for (ii).

i) D > 0

100 - 20d > 0

d < 5

ii) D=0

100-20d = 0

d = 5

iii) D < 0

100-20d < 0

d > 5

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