Question

what is the value of 3r (7r-8)

Answer 1

Answer:

$r = 0 \: or \: r = \frac{8}{9}$

Step-by-step explanation:

$3r(7r - 8) = 0$

$27 {r}^{2} - 24r = 0$

$3r(9r - 8) = 0$

$3r = 0 \: or \: 9r - 8 = 0$

$r = 0 \: or \: r = \frac{8}{9}$

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Answer 2

$\Large\red{\mathcal{SoLu}}\Large\green{\mathcal{TiOn}} :-$

➽ 3r (7r - 8)

➽ 21r² - 24r