Question

Q.

15³ - 7³ = 3000 + a
nilai a = ...​

Answer 1

15³ - 7³ = 3000 + a3375 - 343 = 3000 + a3032 = 3000 + a-a = 3000 - 3032-a = -32a = 32

Answer 2

[tex] \tt \: 15 {}^{3} - 7 {}^{3} = 3000 + a[/tex][tex] \tt(15 \times 15 \times 15) - (7 \times 7 \times 7) = 3000 + a[/tex][tex] \tt(225 \times 5) - (49 \times 7) = 3000 + a[/tex][tex] \tt3375 - 343 = 3000 + a[/tex][tex] \tt3032 = 3000 + a[/tex][tex] \tt \: a = 3032 - 3000[/tex][tex] \tt \: a = 32[/tex]