x^2 + 100x - 300000. split the middle term
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Answered by
3
x^2 + 100x - 300000
= x²+600x - 500x - 300000
=x(x+600) -500(x+600)
(x-500)(x+600).
hope it helps you
= x²+600x - 500x - 300000
=x(x+600) -500(x+600)
(x-500)(x+600).
hope it helps you
Answered by
0
Answer:
x = 500 km/hr
Step-by-step explanation:
x²+100x-300000=0
x²+600x-500x-300000=0
x(x+600)-500(x+600)=0
(x-500)(x+600)=0
x=500 or x=(-600)
Speed cannot be negative
So, Speed of plane is 500km/hr
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