Question

3 Y ^2- 5 Y - 12 = 0 find the y​

Answer 1

Step-by-step explanation:

please follow me if my answer is correct

Answer 2

Answer:

Calculation of value of Y by factorisation:

Step-by-step explanation:

3Y² - 5Y - 12 = 0

a = 3, b = -5, c = 12

Rule 1 = a × c

Hence, a × c = 3 × 12

so, we get = 36

Factors of 36 whose difference is 5 = 9 × 4

Now by factorisation method :

3Y² - ( 9 - 4)Y - 12 = 0

3Y² - 9Y + 4Y - 12 = 0

3Y(Y - 3) + 4(Y - 3) = 0

(3Y + 4) (Y - 3) = 0

Now,To get the value of Y:

i) 3Y + 4 =0

3Y = -4

_Y = -4/3

ii) Y - 3 = 0

Y = 3

Hence,the value of Y = -4/3 or 3

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