Use the elimination method to find Pe and Qe, given Multiplying (4.41) by 3, Subtracting (4.43) from

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Use the elimination method to find Pe and Qe, givenimage text in transcribed

image text in transcribed

Multiplying (4.41) by 3,image text in transcribed

Subtracting (4.43) from (4.42), be careful to change the sign of every term in (4.43) before adding:image text in transcribed

Using the quadratic formula,image text in transcribed

Substituting Q = 7 in (4.41) or (4.42),image text in transcribed

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