find the sums and products of the roots of this equation
1) 2t^2 -5 = 0
2) 3p^2 +7p=0
3) kx^2 -2x+1 =0
On separate diagrams ,sketch the graph of
(a) y= |x-2|
(b) y=|x|+2
find the value of A and B in each of the following identities
(a) A(9x-3)(x+1)+B(x-3)=7x^2 -17x-12
(b) 3x^3+5x^2+13x+1 = (3x-1)(x^2+2x+A)+B
A Math question , please help
2010-04-01 5:06 am
回答 (3)
2010-04-01 5:48 am
2010-04-04 1:42 am
2010-04-01 5:09 am
1) 2t^2 -5 = 0
Sum of roots = -0/2 = 0
Product of roots = -5/2
2) 3p^2 +7p=0
Sum of roots = -7/3
Product of roots = 0/3 = 0
3) kx^2 -2x+1 =0
Sum of roots = 2/k
Product of roots = 1/k
Sum of roots = -0/2 = 0
Product of roots = -5/2
2) 3p^2 +7p=0
Sum of roots = -7/3
Product of roots = 0/3 = 0
3) kx^2 -2x+1 =0
Sum of roots = 2/k
Product of roots = 1/k
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