3. Fatore os polinômios abaixo.
a) 5a² - 30 = b) 6b²c³ - 12bc =
c) 11xyz – xy =
d) 9x²y² - 18xy + 2xy – 4 =
e) 144x² - 121 =
f) 9x² - 24x + 16 =
g) 5a²b² - 5 + 7a²b² - 7 =
h) 9x² - 3x + 18 =
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Step-by-step explanation:
done by splitting middle term
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