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OpenStudy (anonymous):
Solve by factoring: One of the solutions to the quadratic equation x2 + 3x - 28 is -7. What is the other solution? can someone please help with this question ?
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OpenStudy (aripotta):
find two numbers whose product is -28 and sum is 3
OpenStudy (anonymous):
thankyou!
OpenStudy (aripotta):
they said -7 was a solution, which means (x + 7) is one of the factors. 7 times what equals -28?
OpenStudy (anonymous):
7 x -4 =-28
OpenStudy (aripotta):
so (x + 7)(x - 4) x = -7 x = 4
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OpenStudy (anonymous):
ohhhhh, okay, i get..kinda. thankyou (:
OpenStudy (aripotta):
no problem :]
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