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Phổ biến Word Problems >

fifteen less than the square of a number is the same as twice the number

Lời Giải

f i f t ee n l ess t han t h e s q u a re o f a n u mb er i s t h e s am e a s tw i ce t h e n u mb er

Lời Giải

The number : 5 or - 3

Các bước giải pháp

Represent the number with

x

A.T.Q.:

x^{2} - 15 = 2 x

Giải

x, x^{2} - 15 = 2 x : x = 5, x = - 3

The number : 5 or - 3

Ví dụ phổ biến

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