find the value of a and b so that 1-7x is a factor of -14x^3-47x^2-14x+a
Answers
Answered by
26
1- 7x is the factor
1- 7x = 0
7x = -1
x = -1 /7
put it in x place
p (x) =-14x^3 -47 x ^2-14 x +a
p (-1 /7 )=-14 (-1/7 )^3 -47 (-1/7)^2 -14 (-1/7 )+a
= -14 (-1 /343 )-47 (1/49 )-14 (-1/7 )+a
=14/343-47/149- 14/7 +a
=2/49 -47/149 -2+a
0 =-2.87+a
3=a
1- 7x = 0
7x = -1
x = -1 /7
put it in x place
p (x) =-14x^3 -47 x ^2-14 x +a
p (-1 /7 )=-14 (-1/7 )^3 -47 (-1/7)^2 -14 (-1/7 )+a
= -14 (-1 /343 )-47 (1/49 )-14 (-1/7 )+a
=14/343-47/149- 14/7 +a
=2/49 -47/149 -2+a
0 =-2.87+a
3=a
ishu146:
use round of kr lena
fr aapka answer 3 aaye g
muje khali ye bolo muje 49 ek baar likna ha ya doo bar
ek bar to aap 2/49 -47 /49 -2 krke krna
ha kar ke dekha nikta hai
thank u for yr time
wlc
aab solve ho gya
gi hogaya thanks again
it's my pleasur yr
Answered by
0
Answer:
a=3
Step-by-step explanation:
hope this helps you ..........
Similar questions