BIG POINT UwU - Universityku

Quiz by RomeoJuliet
{Mapel : Matematika}

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Soal :
1. (8x + 7y + 2) – 3 (4x + 9y) = ?
2. 5x – 5y + (6x – 6) = ?
3. 5 (11m – 12n) – (21m – 11n) = ?
4. 4 (6a + 8b – 3a) – 8 (a + b) = ?
5. 2 (3x – 4)² = ?

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BIG POINT UwU

Penjelasan dengan langkah-langkah:

Nomor 1

(8x + 7y + 2) – 3 (4x + 9y)

= 8x + 7y + 2 – 3(4x) – 3(9y)

= 8x + 7y + 2 – 12x – 27y

= 8x – 12x + 7y – 27y + 2

${ boxed{ boxed{ rm = -4x - 20y + 2}}}$

Nomor 2

5x – 5y + (6x – 6)

= 5x – 5y + 6x – 6

= 5x + 6x – 5y – 6

${ boxed{ boxed{ rm = 11x - 5y - 6}}}$

Nomor 3

5 (11m – 12n) – (21m – 11n)

= 5(11m) – 5(12n) – 21m + 11n

= 55m – 60n – 21m + 11n

= 55m – 21m – 60n + 11n

${ boxed{ boxed{ rm = 34m - 49n}}}$

Nomor 4

4 (6a + 8b – 3a) – 8( a + b )

= 4 ( 3a + 8b ) – 8a – 8b

= 12a + 32b – 8a – 8b

= 12a – 8a + 32b – 8b

${ boxed{ boxed{ rm = 4a + 24b}}}$

Nomor 5

2 (3x – 4)²

= 2 × ( (3x)² – ( 2( 3x × 4 )) (-4)² )

= 2 × ( 9x² – 24x + 16 )

${ boxed{ boxed{ rm = 18x² - 48x + 32}}}$