Question

Fan and Medal
Im confused please help

Solve: 5x2 + 25x = 0.

Answer 1

How would I get this into quadratic formula without a c variable

Answer 2

@jim_thompson5910 @Vocaloid @Hero

Answer 3

Then you do not use c at all
The 4ac becomes 0 in the equation.

Answer 4

out of my answer choices what would it be then? I'm confused at how you would plug it in and still get the answer

Answer 5

x = 0, x = 5
x = 0, x = −5
x = −5, x = 0, x = 5
x = 5, x = 25

Answer 6

-b\[\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Answer 7

ax^2+bx+c
so a=5 and b=25

Answer 8

so it would be -25 =+/- sqrt of 25 all over 10

Answer 9

i got it thanks

Answer 10

\[\frac{ -25\pm \sqrt{25^2-4(5)(0)} }{ 2(5) }\]
\[\frac{ -25\pm \sqrt{625} }{ 10 }\]
\[\frac{ -25\pm25 }{ 10 }\]
using addition it is \[\frac{ -25+25 }{ 10 }=0\]
using subtraction it is \[\frac{ -25-25 }{ 10}=-5\]

Answer 11

Glad you did :)

Answer 12

wait it is not square root of 25. You mean square root of 625 since it is b^2 not b

Answer 13

all good now?