Question

Assignment For Summer Holidays (2019-2020)
Polynomial
Q.1 Write the degree of polynomial 2-u-u? +5u10
Q.2 if x =
ro of a polynomial p(x) = 27x2 - ax? - x + 3, then find the value of 'a'.
Q.3 Find the value of a and b so that (x + 1) and (x - 1) are factors of x* + ax + 2x - 320
Q.4 Find the value a and b so that polynomialp(x) = x3 – 3x2 - ax + b has (x + 1)and (x – 5) as
factors.
Q.5 Find the value of x3 - 27y3 – 343 - 63xy, when x = 3y +7.
Q.6 Find the degree of the polynomial
(a) 4x4 + 0x3 + 0x5 + 5x + 7
(b) v2
(c) Zero polynomial
Q.7 Simplify: (2x - 5y)3 - (2x + 5y)3
Q.8 If x2 + 1 = 66, find the value of x3
Q.9 if (y + 1) is a factor of ky3 + y2 – 2y + 4k – 10, then find the value of k.
Q.10 Factorise: 16x2 + 25 - 40x.​

Answer 1

Answer:

answer 9

Step-by-step explanation:

1. given.(y+1)=0 , y=-1 , according to the question , ky3 +y2 -2y +4k -10 value of y=-1, putting the value k(-1)3+(-1)2-2(-1)+4k-10 ; -3k -2 +2 +4k -10=0; -3k+4k -2+2 -10 =0;k+0-10=0;k-10=0;k=10 : thus ,the value of k is 10