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Solve by factoring 3x^2 -19x -40 = 0
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Solve by factoring 3x^2 -19x -40 = 0

User Goldsmith
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1 Answer

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(3x^2 - 19x) - 40=0Multiply 3*-40=-120
Then find the factor which is -19
 Now using 2 factors ~ 3x2 - 24x + 5x - 40
We going to split it up
3x*(x-8)
Add your last two terms
5*(x-8)
Then add up the 4 terms
(3x+5)*(x-8)
Which means x=8
User Nimasmi
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7.9k points
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