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Mathematics 22 Online
OpenStudy (anonymous):

Factor completely: x2 − 4x + 9

OpenStudy (anonymous):

Can you check the question to make sure no typos ?

OpenStudy (anonymous):

x is squared

jimthompson5910 (jim_thompson5910):

There are no two numbers that both multiply to 9 and add to -4. So this cannot be factored.

OpenStudy (anonymous):

yep.

OpenStudy (anonymous):

another way to check is the discriminant (b^2-4ac) which is negative here indicating no real solutions.

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