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what is the discrimiant

Algebra
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Use the discriminant to describe the roots of each equation. Then select the best description.

x2 - 4x + 4 = 0he discriminant to describe the roots of each equation. Then select the best description.

Apr 20th, 2015

discriminant= b^2-4ac= (-4)^2-(4*1*4)= 16-16=0

this for d<=0, it means that the equation has double roots, i.e it is a perfect square

so x= 4/2=2

Apr 20th, 2015

Use the discriminant to describe the roots of each equation. Then select the best description.

x2 - 4x + 4 = 0


Apr 20th, 2015

thank you


Apr 20th, 2015

i have ust done that...the equation has a double root...

Apr 20th, 2015

i have just done that...the equation has a double root...

Apr 20th, 2015

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