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X + Y is equal to 3, if X + Y is equal to 3 X square + Y square is equal to 5 then xy is equal to |
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Answer» -STEP explanation:Given: x+y =3. --1eq. 3x^2 + y^2 = 5 --2eq.Solution: x = 3-yputting VALUE of x in 2 eq.3(3-y)^2 + y^2 = 53(9 + y^2 + 6y) +y^2 =527 +3Y^2 + 6y +y^2 = 54y^2 +6y +27 - 5= 04y^2 +6y +22= 02(2y^2 + 3y + 11) =02y^2 + 3y + 11= 0now you can solve it by discrimination method |
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