A polynomial in x whose roots are 4/3 and -3/5 is?
...A polynomial in x whose roots are 4/3 and -3/5 is?
15x2 - 11x – 12
15x2 + 11x – 12
12x2 - x – 12
12x2 + 11x – 15
Correct answer is A
If 4/3 and -3/5 are roots of a polynomial
Imply x = 4/3 and - 3/5
3x = 4 and 5x = -3
∴3x-4 = 0 and 5x+3 = 0 are factors
(3x-4)(5x+3) = 0 product of the factors
15x2 + 9x – 20x – 12 = 0 By expansion
15x2 - 11x – 12 = 0
Describe the locus L shown in the diagram below ...
Given that ξ = {1, 2, 3, . . . . . . ,10}, P= (x : x is prime) and Q = {y : y is odd}, find Pl∩Q...
In the diagram, |QR| = 5cm, PQR = 60<sup>o</sup> and PSR = 45<sup>o</sup>. F...
If S = √t2−4t+4, find t in terms of S...
A plane flies 90km on a bearing 030° and then flies 150km due east. How far east of the starting...
If 3loga + 5loga - 6loga = log64, what is a? ...