( × + 5 ) × ( 5× – 1) =……

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( × + 5 ) × ( 5× – 1) =……

( × + 5 ) × ( 5× – 1) =
(x² – x ) ( 10x – 5) =
x² – x + 10x ²- 5 =
x² + 9x² – 5

5X²  - X  + 25X  -5 = 5X² + 24X  -5
 TUH JAWABAN NYA YG BENER