Question

3y2-20y-23=0 solve by formula method

Answer 1

Step-by-step explanation:

3y^2 -20y-23=0

By spling middle term,we get

3y^2+3y-23y-23=0

3y(y+1)-23(y+1)=0

(3y-23)(y+1)=0

Now,

3y-23=0

3y=23

y=23/3

and y+1=0

y=-1

hope it helps

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Answer 2

$3 {y}^{2} - 20y - 23 = 0 \\ = > 3 {y}^{2} - 23y + 3y - 23 = 0 \\ = > y(3y - 23) + 1(3y - 23) = 0 \\ = > (3y - 23)(y + 1) = 0 \\ so \: \: \: \\ \: \: \: \: \: 3y - 23 = 0 \: \: \: \: \: \: or \: \: \: \: y + 1 = 0\\ \: \: \: \: 3y = 23 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: y = - 1\\ \: \: \: \: \: y = \frac{23}{3}$