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Mathematics 15 Online
OpenStudy (anonymous):

Solve the quadratic equation 5x^2 - 125 = 0. A. -5 B. 5 C. ±5 D. ±25

OpenStudy (alekos):

have you tried to solve?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

soultions are =5 and -5 but i don't know which one to pick hehe

OpenStudy (anonymous):

that would be C @musa19965

OpenStudy (alekos):

thats right

OpenStudy (anonymous):

can you explain to me bsho?

OpenStudy (anonymous):

well how did you get your answer.

OpenStudy (anonymous):

by factoring

OpenStudy (anonymous):

well because you got 5 and -5 that is the same thing as saying ±5

OpenStudy (anonymous):

oh thanks so much :)

OpenStudy (anonymous):

this quadratic crosses the X-axis at 5 and -5. there for thats what your answer is

OpenStudy (anonymous):

got it :)

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