If 3x +4y=16 and xy=4; find the value of 9x² + 16y²
Added by Sourav G.
Step 1
We can use substitution method to do this. From the second equation, we have: xy = 4 Solving for y, we get: y = 4/x Substituting this value of y in the first equation, we get: 3x + 4(4/x) = 16 Multiplying both sides by x, we get: 3x² + 16 = 16x Bringing Show more…
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