<PRE><B>Question 317905</B>
factor completely 5X2 + 20X - 60 (note the 2 is squared) What I have for work is
=5(x2 + 5(4x) + 5(-12)
=5(x2 + 4x -12) 
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OK so far.
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To factor further,
think of two numbers whose product is -12 and whose sum is 4.
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The numbers are +6 and -2
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Rewrite the problem as:
= 5(x^2 +6x-2x -12)
Factor to get:
= 5[(x(x+6)-2(x+6)]
Factor again:
= 5(x+6)(x-2)
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Cheers,
Stan H.
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