Polynomials Class 9 WS1
| (Q.1) The factors of x2 + xy – 2xz – 2yz are | (a) (x + y) (x + 2z) (b) (x + y) (x – 2z) (c) (x – y) (x – 2z) (d) (x – y) (x + 2z) | ( 1 mark ) |
| (Q.2) Factors of x4 – x2 – 12 are | (a) (x2 + 2) (x2 – 6) (b) (x + 3) (x – 3) (x2 + 2) (c) (x + 2) (x – 2) (x2 – 3) (d) (x + 2) (x – 2) (x2 + 3). | ( 1 mark ) |
| (Q.3) Divide by 2xy. | (a) 8xy + 3y – 5xy2 (b) 5xy2 (c) 4xy – 3y – 5xy2 (d) 4xy – 3y + 5xy2 | ( 1 mark ) |
(Q.4) The degree of the polynomial 2 – y2 – y3 + 2y8 is_________
(Q.5) Show that is a root of the polynomial .
| (Q.6) If (x –1) is a factor of 4x3 + 3x2 – 4x + k, then the value of k is | (a) –4. (b) –3. (c) –2. (d) -1. | ( 1 mark ) |
Post Comment