Jawaban:
9x² - 11x + 13
Penjelasan dengan langkah-langkah:
-7x + 2x - 7 + 9x² - 6x + 20
= 9x² - 6x - 7x + 2x - 7 + 20
= 9x² - 11x + 13
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Jawaban:
9x² - 11x + 13
Penjelasan dengan langkah-langkah:
-7x + 2x - 7 + 9x² - 6x + 20
= 9x² - 6x - 7x + 2x - 7 + 20
= 9x² - 11x + 13