if 3x+2/x=7 then find 9x²-4/x²=?
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hemu29:
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3x+2/x=7
3x+2=7x
3x-7x=-2
-4x= -2
x= 2/4=1/2
so , 9x²-4/x²
9(1/2)²-4/(1/2)²
9*1/4 - 4/ 1/4
9*1/4- 1
3/2 -1/1
=1/2 hey dear answer is here okay dear.
3x+2=7x
3x-7x=-2
-4x= -2
x= 2/4=1/2
so , 9x²-4/x²
9(1/2)²-4/(1/2)²
9*1/4 - 4/ 1/4
9*1/4- 1
3/2 -1/1
=1/2 hey dear answer is here okay dear.
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