Question 94078
Let x be the unknown number.
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Then twice the square of this number is {{{2x^2}}}
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15 times the number is {{{15x}}}. Subtracting this from twice the square of the number is:
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{{{2x^2 - 15x}}}
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And you are told that this has to equal -27.
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Therefore, the equation you are looking for is:
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{{{2x^2 -15x = -27}}}.
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Just in case you work out this equation, it has two solutions ... {{{x = 9/2}}} and {{{x = 3}}}
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Hope this is of some assistance to you.