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x^2+4x +4 = 0
@imqwerty
What do you want to do with this equation?
1)compare this equation with\[ax^2+bx+x=0\] 2)identify a,b,c 3)apply this formula to find discriminant\[D=b^2-4ac\]
\[x^{2}+4x+4=0\text{ Solve for x?}\]
x^2 + 4x +4 = 0 a = 1, b = 4, c = 4 D = 4x - 4(1)(4)
would my final answer be 0?
wait u wanna knw discriminant or roots?
yes i do. its just like the other question u answered.
If you're solving for x then the quadratic formula would be of better use:\[x=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}\]
What do you mean by your final answer then?
ok yes D=0 is correct
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.
this is what its asking
Okay. Please post that next time because I got confused :p
haha ok
@imqwerty The quadratic equation will be having only one real root.?
I suck at discriminants though so yeah ask the great qwerty ^^
back
yes because D=0 there is only 1 real root
ok thnx!!
np :)
can u help with one more?
yea y not
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
ok do the same steps
a = 5, b = 1, c = 4 D = 1 - 4(5)(4) D = 81. is it correct?
back
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 :)
i dont understand
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