What is the solution set of 2x2 + x = 15
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If you mean: 2x2+11x+15 then it is (2x+5)(x+3) when factored
15 to the 2nd power or 15 squared equals 15 * 15 which equals 225.
2x2 + 7x - 15 = (2x - 3)(x + 5)
15 times 15 equals 225.
initial problem: 5*m=15 divide both sides by 5: m=(15)/(5) solution: m=3