Some of the steps in the derivation of the quadratic formula
are shown.
2
Step 4: - 4ac + b2
4a
2 – 4ac
Step 5: (
b? = dx+
= (}fx+ med
=(x +
4a
b2 - 4ac
Step 6:
b
2a
49²
Step 7:
16
- 4 ac
2a
=X+
2a

Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14

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The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest