Sara's paychek: $2700
<span>Aliyah’s paycheck is $700 more than one half of Sara’s: $2700/2+$700
Aliyah's paychek: $2050
</span><span>If Aliyah’s paycheck doubles, she would be making $650 more per paycheck than John: $2050*2-650$
John make $3450 per paychek.
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Take half of the coeff. of x (which is 6), and then square the result: 3^2 = 9.
Then <span>x^2-6x + 9 - 9, and
x^2 - 6x + 9 is a perfect square trinomial.
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