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OpenStudy (anonymous):
Solve: u2 + 2u - 3 = 0
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OpenStudy (anonymous):
Ok, to solve, you have to factor, do you know how to factor?
geerky42 (geerky42):
HINT: u²+2u-3 = (u + __)(u - __)
geerky42 (geerky42):
the sum of numbers in blank is 2 and product is -3. can you figure out what number they are?
OpenStudy (anonymous):
remember this formula (ax)^2 +(b+c)(ax) + bc =(ax+b)(ax+c)
geerky42 (geerky42):
@FallingBear
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