njoodh2005 njoodh2005

14-09-2020
Mathematics

contestada

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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jimrgrant1 jimrgrant1

14-09-2020

Answer:

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

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