Himpunan penyelesaian sistem persamaan 2x+3y-4=0 X+2y-4=0 adalah (x.y) nilai dari (x+y)²

<p>Jawaban yang tepat adalah 0</p><p>&nbsp;</p><p>Pembahasan :<br>2x+3y-4=0 --&gt; 2x + 3y = 4 &nbsp; &nbsp; (1)</p><p>x+2y-4=0 &nbsp; &nbsp;--&gt; x + 2y = 4 &nbsp; &nbsp; &nbsp; (2)</p><p>&nbsp;</p><p>Eliminasi x untuk mendapatkan nilai y</p><p>2x + 3y = 4 ---&gt; (dikali 1) --&gt; 2x + 3y = 4</p><p>&nbsp;x + 2y = 4 &nbsp;---&gt; (dikali 2) --&gt; &nbsp;<u>2x + 4y = 8&nbsp;</u> _</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -y = -4</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; y = 4</p><p>Substitusikan y = 4 ke persamaan (1)</p><p>2x + 3y = 4&nbsp;</p><p>2x + 3(4) = 4&nbsp;</p><p>2x + 12 = 4</p><p>2x = 4 - 12</p><p>2x = -8</p><p>x = -4</p><p>&nbsp;</p><p>Nilai (x + y)² = (-4 + 4)² = 0</p><p>&nbsp;</p>