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Phổ biến Word Problems >

The hiệu of the square of a number and 40 is equal to 3 times that number.

Lời Giải

T h e d i ff ere n ce o f t h e s q u a re o f a n u mb er an d 40 i s e q u a l t o 3 t im es t ha t n u mb er .

Lời Giải

The number : 8 or - 5

Các bước giải pháp

Represent the number with

x

A.T.Q.:

x^{2} - 40 = 3 x

Giải

x, x^{2} - 40 = 3 x : x = 8, x = - 5

The number : 8 or - 5

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