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14. lf 3x + 4y = 16 and xy=4; find the value of92 + 169 |
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Answer» 3x+4y=16 Squaring on both sides (3x+4y)^2=256 (3x)^2+(4y)^2 +24xy=256 9x^2+16y^2+96=256 Answer is 160 Not understanding |
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