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3 votes
Can you solve (4x-3)/(x+2)+(15)/(x-3)

User CTABUYO
by
6.3k points

2 Answers

4 votes

(4x-3)/(x+2) +
(15)/(x-3) = 0
1st step: We need to have a common denominator.
So we do this:

((4x-3)*(x-3))/((x+2)*(x-3)) +
((15)*(x+2))/((x-3)*(x+2)) = 0
2nd step: Distribute them

(4x^(2)-3x-12x+9)/((x-3)(x+2)) +
(15x+30)/((x+2)(x-3)) = 0
3rd step: Do the rest of the equation!
We can put it on one fraction, its fine.

(4x^2-15x+9+15x+30)/((x+2)(x-3)) = 0

(4x^2+39)/((x+2)(x-3)) = 0 (-15 and 15 cancels out)
4th step: take the denominator to the other side
4x²+39 = 0 (anything × 0 = 0)
5th step: Take 39 to the other side
4x² = -39
6th step: Divide by 4 on both sides

(4x^2)/(4) =
-(39)/(4)
(4 and 4 cancels out)
x² =
-(39)/(4)
7th step: Take the square root to keep x alone
x =
-\sqrt(39)/(4)
It can also be written as:
x =
-( √(39) )/( √(4) )
Final answer:
x =
-( √(39) )/(2)
User Meet Shah
by
6.9k points
4 votes
Please see the pic, I'd solved in it.
Can you solve (4x-3)/(x+2)+(15)/(x-3)-example-1
User Max Langhof
by
6.4k points
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