sunshine2827646a
sunshine2827646a
15-08-2014
Mathematics
Answered
Factor completely: X2-7x-30
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konrad509
konrad509
15-08-2014
[tex]x^2-7x-30=\\ x^2-10x+3x-30=\\ x(x-10)+3(x-10)=\\ (x+3)(x-10)[/tex]
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Аноним
Аноним
15-08-2014
x²-7x-30
=(x-10)(x+3)
Therefore, x=10 and x=-3.
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