Thay $x=-17$ vào biểu thức $G$:
$G\,=2.(-17)^3+35.(-17)^2+15.(-17)+1\\\quad =2.(-4913)+35.289-105+1\\\quad =-9826+10115-225+1\\\quad =65$
Vậy $G=65$ tại $x=-17$
Đáp án+Giải thích các bước giải:
Thay `x=-17` vào G ta được :
`G=2.(-17)^3+35.(-17)^2+15.(-17)+1`
`G=2.(-4913)+35.289-225+1`
`G=-9826+10115-225+1`
`G=65`
Vậy `G=65` tại `x=-17`
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