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Mathematics 11 Online
OpenStudy (anonymous):

Solve 3x2 = –30x + 24

OpenStudy (asnaseer):

just move all the terms from the right-hand-side to the left-hand-side to form a standard quadratic and then solve.

OpenStudy (anonymous):

i did that

OpenStudy (asnaseer):

what equation did you end up with?

OpenStudy (anonymous):

3x^2+30x-24?

OpenStudy (asnaseer):

that is correct, so now just solve:\[3x^2+30x-24=0\]

OpenStudy (asnaseer):

notice you can divide through by 3

OpenStudy (anonymous):

im stuck on finding the answer towards the end

OpenStudy (asnaseer):

if you first divide through by 3 you end up with:\[x^2+10x-8=0\]

OpenStudy (anonymous):

okay let me restart it over

OpenStudy (anonymous):

would my answer be -5+-sqrt33 ?

OpenStudy (asnaseer):

yes - well done!

OpenStudy (anonymous):

thankyouuu (:

OpenStudy (asnaseer):

yw

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