SOLUTION: 3x(2x+1)=18

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Question 206737This question is from textbook Elementary and Intermediate
: 3x(2x+1)=18 This question is from textbook Elementary and Intermediate

Found 2 solutions by nerdybill, mesut bora:
Answer by nerdybill(6958) About Me  (Show Source):
You can put this solution on YOUR website!
3x(2x+1)=18
distributing the 3x to terms inside parenthesis:
6x^2 + 3x = 18
dividing both sides by 3:
2x^2 + x = 6
2x^2 + x - 6 = 0
factoring the left side:
(2x-3)(x+2) = 0
Solving for x:
x = {3/2, -2}

Answer by mesut bora(1) About Me  (Show Source):
You can put this solution on YOUR website!
3x(2x+1)=18
x(2x+1)=6
2x^2+x-6=0
2x -3
x 2 ise 2(2x)-3x=x olduğundan (2x-3)(x+2)=0
x=3/2 ^ x=-2 dir