Question

(i) 3х2 – 5х – 12 = 0​

Answer 1

Answer:

-6/5

Step-by-step explanation:

3×2 - 5x - 12 = 0

6 - 5x - 12 = 0

6 - 5x = 0 + 12

-5x = 12 - 6

-5x = 6

x = 6/-5

x = -6/5

Answer 2

$3 {x}^{2} - 5x - 12 = 0 \\ \\ = > 3 {x}^{2} - 9x + 4x - 12 = 0 \\ \\ = >3x(x - 3) + 4(x - 3) = 0 \\ \\ = > (x - 3)(3x + 4) = 0 \\ \\ = > x = 3 \: and \: \frac{ - 4}{3}$

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