If (x + 2) and (x - 1) are factors of the expression \(Lx...
If (x + 2) and (x - 1) are factors of the expression \(Lx^{3} + 2kx^{2} + 24\), find the values of L and k.
L = -6, k = -9
L = -2, k = 1
k = -1, L = -2
L = 0, k = 1
k = 0,L = 6
Correct answer is A
f(x) = Lx3 + 2kx2 + 24
f(-2) = -8L + 8k = -24
4L - 4k = 12
f(1):L + 2k = -24
L - 4k = 3
3k = -27
k = -9
L = -6
The angle of a sector of s circle, radius 10.5cm, is 48°, Calculate the perimeter of the se...
The nth term of a sequence is n2 - 6n - 4. Find the sum of the 3rd and 4th terms....
What is the general term of the sequence 3, 8, 13, 18, ...? ...
In the diagram, PQRS is a circle with O as centre and PQ/RT. If RTS = 32°. Find PSQ ...