Identify the zeros of the function f(x) = 2x2 − 2x + 13 using the quadratic formula.
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Answer:
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- Write the equation of a line in slope - intercept form that has a slope of -2 and passes through the point ( - 1 , 8 ).
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- Slope ( m ) = -2
- Given point = ( - 1 , 8 )
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- Equation of a line in slope - intercept form ( i.e y = mx + c )
Let the point ( -1 , 8 ) be ( x₁ , y₁ )
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plug the known values :
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Distribute -2 through the parentheses :
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Transpose 8 to right hand side and change it's sign
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And we're done !
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