Diketahui :

Posted on

Panjang persegi panjang (p) = 3x + 2
Lebar persegi panjang (l) = x – 1
Luas persegi = p x l
= (3x + 2) ( x – 1)
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Jadi luas persegi panjang tersebut adalah….. satuan luas​

Diketahui :

Jawaban:

3x² x 2

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= ( 3x + 2 ) ( x - 1 )

= ( 3x times x ) + ( 3x times (-1) ) + ( 2 times x ) + (2 times (-1) ) \

= {3x}^{2} + ( (-3x) + 2x ) + (-2)

= {3x}^{2} - x - 2

(3x + 2)(x – 1)
= 3x * x – 3x + 2x – 2
= 3x² – 3x + 2x – 2
= 3x² – x – 2

Semoga membatu