Question
What is the coefficient of z in (z−5)3?
Answer: Option D
:
D
Was this answer helpful ?
:
D
(z−5)3=z3−53−3×z2×5+3×z×52
[Using (a−b)3=a3−b3−3a2b+3ab2]
⇒(z−5)3 = z3−125−15z2+75z
Hence, the coefficient of z is 75.
Was this answer helpful ?
More Questions on This Topic :
Question 1.
Which of the following are polynomials?
....
Question 4.
Zeroes of x2−56x+108 are______.
....
Question 10.
The zeroes of mn(x2+1)=(m2+n2)x are:
....
Latest Videos
Latest Test Papers
Submit Solution