Pertanyaan

7 3 − 3 3 + 3 125 = ...

$7^{3} - 3^{3} + 3125 = ...$

B. Hary

Master Teacher

Jawaban terverifikasi

Jawaban

.

7 cubed minus 3 cubed plus cube root of 125 equals 321

Pembahasan

Perhatikan bahwa Sehingga, Jadi, .

Perhatikan bahwa

table attributes columnalign right center left columnspacing 0px end attributes row cell cube root of 125 end cell equals cell cube root of 5 cubed end root end cell row blank equals 5 end table

Sehingga,

table attributes columnalign right center left columnspacing 0px end attributes row cell 7 cubed minus 3 cubed plus cube root of 125 end cell equals cell left parenthesis 7 cross times 7 cross times 7 right parenthesis minus left parenthesis 3 cross times 3 cross times 3 right parenthesis plus 5 end cell row blank equals cell 343 minus 27 plus 5 end cell row blank equals 321 end table

Jadi, 7 cubed minus 3 cubed plus cube root of 125 equals 321 .