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OpenStudy (anonymous):
solve 4x^2=12x+40
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OpenStudy (campbell_st):
rewrite the equation 4x^2 -12 - 40 = 0 take 4 as a common factor 4(x^2 - 3x - 10) = 0 factorise the brackets 4(x - 5)(x + 2) = 0 I'll leave you to finish solving the question.
OpenStudy (anonymous):
are the answers -5 and 2?
OpenStudy (campbell_st):
nearly... reverse the signs on your answers
OpenStudy (anonymous):
|dw:1343075248668:dw|
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