
Steve C. answered 06/26/15
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Steve C. Math & Chemistry Tutoring
As written, I interpret the equation to be 2/(7x2) + 9/(7x) = 0
To solve this, first note that x cannot be equal to 0. Multiply each term by 7x2 to get 2 + 9x = 0. This leads to the answer x = -2/9
If equation was meant to be (2/7)x2 + (9/7)x = 0, then this would simplify to 2x2 + 9x = 0. Factoring the expression on the left leads to x(2x +9) = 0, which has solutions of 0 and -9/2