5. question #2
Polynomial p(x) has a and b constant. It’s given that (x-4) and
(2x-6) are factor of p(x).
Find value of a and b
P(x) = 2x2 + ax - b
6. answer
A = -14
B = -24
How?
2(4)2 + 4a – b = 32 + 4a – b
2(3)2 + 3a – B = 18 + 3a – b
Use elimination and
substitution
32 + 4a – b
18 + 3a – b
_________ -
14 + a = 0
a = -14
18 + 3(-14) – b = 0
18 + (-42) – b = 0
-24 – b = 0
-b = 24
b = -24
15. Credits
◂ Presentation template by Slidesgo
◂ Icons by Flaticon
◂ Images & infographics by Freepik
◂ Author introduction slide photo created by Freepik
◂ Text & Image slide photo created by Freepik.com
◂ Big image slide photo created by Freepik.com