Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (diana.xl):

...

OpenStudy (diana.xl):

x^2+4x +4 = 0

OpenStudy (diana.xl):

@imqwerty

OpenStudy (kittiwitti1):

What do you want to do with this equation?

imqwerty (imqwerty):

1)compare this equation with\[ax^2+bx+x=0\] 2)identify a,b,c 3)apply this formula to find discriminant\[D=b^2-4ac\]

OpenStudy (kittiwitti1):

\[x^{2}+4x+4=0\text{ Solve for x?}\]

OpenStudy (diana.xl):

x^2 + 4x +4 = 0 a = 1, b = 4, c = 4 D = 4x - 4(1)(4)

OpenStudy (diana.xl):

would my final answer be 0?

imqwerty (imqwerty):

wait u wanna knw discriminant or roots?

OpenStudy (diana.xl):

yes i do. its just like the other question u answered.

OpenStudy (kittiwitti1):

If you're solving for x then the quadratic formula would be of better use:\[x=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}\]

OpenStudy (kittiwitti1):

What do you mean by your final answer then?

imqwerty (imqwerty):

ok yes D=0 is correct

OpenStudy (diana.xl):

Find the value of the discriminant for each quadratic equation below. Show all steps needed to write the answer in simplest form, including substituting the values of a, b, and c in the discriminant formula. Then use the value to determine how many real number solutions each equation has.

OpenStudy (diana.xl):

this is what its asking

OpenStudy (kittiwitti1):

Okay. Please post that next time because I got confused :p

OpenStudy (diana.xl):

haha ok

OpenStudy (diana.xl):

@imqwerty The quadratic equation will be having only one real root.?

OpenStudy (kittiwitti1):

I suck at discriminants though so yeah ask the great qwerty ^^

imqwerty (imqwerty):

back

imqwerty (imqwerty):

yes because D=0 there is only 1 real root

OpenStudy (diana.xl):

ok thnx!!

imqwerty (imqwerty):

np :)

OpenStudy (diana.xl):

can u help with one more?

imqwerty (imqwerty):

yea y not

OpenStudy (diana.xl):

Find the value of the discriminant for each quadratic equation below. Show all steps needed to write the answer in simplest form, including substituting the values of a, b, and c in the discriminant formula. Then use the value to determine how many real number solutions each equation has. 5x^2 + x = 4

imqwerty (imqwerty):

ok do the same steps

OpenStudy (diana.xl):

a = 5, b = 1, c = 4 D = 1 - 4(5)(4) D = 81. is it correct?

imqwerty (imqwerty):

back

imqwerty (imqwerty):

1st u need to convert the equation into this form-\[ax^2+bx+c=0\]so there shuld be a 0 on the left hand side can u bring a zero out there by subtracting 4 from both sides :)

OpenStudy (diana.xl):

i dont understand

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!