bentuk sederhana dari x(5x - 2y - 9) + 3 (2x² - 2xy)

<p>Jawaban yang tepat adalah &nbsp;11x² - 8xy - 9x</p><p>&nbsp;</p><p>Pembahasan :</p><p>x(5x - 2y - 9) + 3 (2x² - 2xy) = 5x² - 2xy - 9x + 6x² - 6xy</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; = 5x² + 6x² - 2xy &nbsp;- 6xy - 9x</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; = 11x² - 8xy - 9x</p>