Trong mặt phẳng toạ độ Oxy, cho tam giác ABC với A(-1;2), B(3;2), C(1;4.Viết phương trình đường thẳng d chứa đường cao kẻ từ đỉn
1 answer:
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determinant:
(a)
D<0 means there are no real roots. there are two complex roots with imaginary components.
(b) D=16+20=36>0
D>0 means there are two real roots
(c) D = 20^2-4*4*25 = 0
D=0 means there is one real root with multiplicity 2
Hey there! :D
These are vertical angles. They have the same measure, so they are equal to each other.
Subtract 25 on both sides.
Subtract 2x on both sides.
Divide both sides by 4.
I hope this helps, and have a nice day!
~kaikers
These are vertical angles. They have the same measure, so they are equal to each other.
Subtract 25 on both sides.
Subtract 2x on both sides.
Divide both sides by 4.
I hope this helps, and have a nice day!
~kaikers