2x2-x-15=0 solve by completing square
Answers
Answered by
1
Step-by-step explanation:
2x2-6x+5x-15=0
2x(x-3)+5(x-3)=0
(2x+5)(x-3)=0
x=3;-5/2
Answered by
2
2x² - x - 15 = 0
= 2x² - 6x + 5x - 15 = 0
=> 2x(x-3)+5(x-3) = 0
=> (x-3)(2x+3) = 0
Either
x - 3 = 0
=> x = 3
Or
2x + 3 = 0
=> 2x = -3
=> x = -3/2
Hope it helps...
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