Odpowiedź:
a)
O=4x-3+3x-2+2x+5+9=9x+9
[tex]\displaystyle P=\frac{1}{2} (4x-3+2x+5)\cdot9\\P=\frac{1}{2}\cdot(6x+2)\cdot9=9\cdot(3x+1)=27x+9[/tex]
b)
O=6x-3+5x+3x+4=14x+1
[tex]\displaystyle P=\frac{1}{2} ah\\P=\frac{1}{2}\cdot(6x-3)\cdot6=3(6x-3)=18x-9[/tex]
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Odpowiedź:
a)
O=4x-3+3x-2+2x+5+9=9x+9
[tex]\displaystyle P=\frac{1}{2} (4x-3+2x+5)\cdot9\\P=\frac{1}{2}\cdot(6x+2)\cdot9=9\cdot(3x+1)=27x+9[/tex]
b)
O=6x-3+5x+3x+4=14x+1
[tex]\displaystyle P=\frac{1}{2} ah\\P=\frac{1}{2}\cdot(6x-3)\cdot6=3(6x-3)=18x-9[/tex]