Mathematics
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OpenStudy (anonymous):
How would you factor u^2 - 3uv - 54v^2?
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OpenStudy (anonymous):
(u-9) (u+6) = 0
OpenStudy (anonymous):
u = 9 or u = -6
OpenStudy (anonymous):
equal zero?
OpenStudy (anonymous):
these answers are not correct
OpenStudy (anonymous):
answer is
\[(u-9 v) (u+6 v)\]
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OpenStudy (anonymous):
Yes, that is it. How did you do that?
OpenStudy (anonymous):
factor. forget the v for a second
OpenStudy (anonymous):
Common factors are 6 and 9 from the 54
OpenStudy (anonymous):
u=-6v or u=9v
OpenStudy (anonymous):
two numbers whose product is -54 and whose sum is -3
the numbers 9 and 3 suggest themselves right away
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OpenStudy (anonymous):
@rohita what are you talking about???
OpenStudy (anonymous):
i meant ans
OpenStudy (anonymous):
this is not an equation. there is no equal sign here. just factor. that is not an answer
OpenStudy (anonymous):
Why does u=-6v or u=9v?
OpenStudy (anonymous):
it doesn't
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OpenStudy (anonymous):
ignore that answer, and ignore first answer. answer is
\[(u-9 v) (u+6 v)\]
OpenStudy (anonymous):
you have to be very careful when using this site. not every answer is correct
OpenStudy (anonymous):
ya right!!!!
OpenStudy (anonymous):
u^2-9uv+6uv-54v^2
u(u-9v)+6v(u-9v)
(u+6v)(u-9v)
OpenStudy (anonymous):
ur c value is 54 n factors of 54 is 9 n 6....