My teacher wont help us. Its like i am in a math lab with a useless teacher.
Multiply & simplify
(2x^2 - 5xy +y^2) ( 3x^-1 + y^-1)
pLEASE i give 10 points to first right answer
I need this grade.
2006-10-26 04:30:00 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(2x^2 - 5xy +y^2) ( 3x^-1 + y^-1)
= (2x^2 - 5xy +y^2)(3/x - 1/y)
= 6x - 15y + 3y^2/x - 2x^2/y + 5x - y
= 11x - 16y + 3y^2/x - 2x^2/y
and your teacher is not useless, you just need to ask questions ... he is just trying to teach to to think
2006-10-26 06:02:16 · answer #1 · answered by Anonymous · 0⤊ 0⤋
(2x^2 - 5xy +y^2) ( 3x^-1 + y^-1)
= (2x^2 - 5xy +y^2)(3/x - 1/y)
= 6x - 15y + 3y^2/x - 2x^2/y + 5x - y
= 11x - 16y + 3y^2/x - 2x^2/y
= (1/xy)(11yx^2 - 16xy^2 + 3y^3 - 2x^3)
2006-10-26 04:40:12 · answer #2 · answered by The Potter Boy 3 · 0⤊ 1⤋