x2+20x-8000 = 0
By Splitting the Middle Term
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Answered by
1
hey
x²+20x-8000=0
x²+(100-80)x-8000=0
x²+100x-80x-8000=0
x(x+100)-80(x+100)=0
(x-80)(x+100)=0
if x-80=0
x=80
x+100=0
x=-100
x²+20x-8000=0
x²+(100-80)x-8000=0
x²+100x-80x-8000=0
x(x+100)-80(x+100)=0
(x-80)(x+100)=0
if x-80=0
x=80
x+100=0
x=-100
Answered by
3
x² + 20x - 8000 = 0
=> x² + 100x -80x - 8000 = 0
=> x (x + 100) - 80 (x + 100) = 0
=> (x-80) (x+100) = 0
=> x-80 = 0 , x+100 = 0
=> x = 80, x = -100
=> x² + 100x -80x - 8000 = 0
=> x (x + 100) - 80 (x + 100) = 0
=> (x-80) (x+100) = 0
=> x-80 = 0 , x+100 = 0
=> x = 80, x = -100
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