Given that z = x² + xy, and that variables and y depends on s and t as follows: x = s+tand y = st. Which of the following is the formula for ? მs '

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Chapter15: Roots
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Given that z = x² + xy, and that
variables x and y depends on s and t
as follows:
x = s+tand y = st.
Which of the following is the formula
for oz?
მყ '
2s + 2t + 2st + t²
2s + 2t + 2st + 8²
st+t²
2s + 2t + st
Transcribed Image Text:Given that z = x² + xy, and that variables x and y depends on s and t as follows: x = s+tand y = st. Which of the following is the formula for oz? მყ ' 2s + 2t + 2st + t² 2s + 2t + 2st + 8² st+t² 2s + 2t + st
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