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Popular Word Problems >

if 2 times a number is subtracted from the square of the same number, the result is at most 80. find the greatest possible number

Solução

i f 2 t im es a n u mb er i s s u b t r a c t e d f ro m t h e s q u a re o f t h e s am e n u mb er, t h e res u lt i s a t m os t 80. f in d t h e g re a t es t p oss ib l e n u mb er

Solução

- 8 \leq x \leq 10

Passos da solução

Represent the number with

x

A.T.Q.:

x^{2} - 2 x \leq 80

Resolver para

x, x^{2} - 2 x \leq 80 : - 8 \leq x \leq 10

- 8 \leq x \leq 10

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