wilkinsserrano3
20.09.2020 •
Mathematics
9x^2 - 16 = (px+t)(px-t) both p and t are constants. Which of the following could be the value of p
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Ответ:
p = 3
Step-by-step explanation:
9x² - 16 ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b)
Thus
9x² - 16
= (3x)² - 4²
= (3x + 4)(3x - 4)
Compare with (px + t)(px - t)
then p = 3
Ответ: