30. What is the numerical coefficient of q2 in –4pq2?
- (A) –4q2
- (B) –4p
- (C) 4p
- (D) pq2
29. Sum of x2 + x and y + y2 is
- (A) 2x2 + y2
- (B) x2 + 2y2
- (C) x2 + y2
- (D) 2x2 + 2y2
28. What is the coefficient of x2 in x3 – 2x2 + 3x + 1?
- (A) –2x2
- (B) –2x
- (C) – 2
- (D) x3 + 3x + 1
27. What is the coefficient of x2 in y + y2x + y3x2 + y4x3?
- (A) y3x2
- (B) x2
- (C) y + y2x + y4x3
- (D) y + y2x + y3x2
26. What is the coefficient of x in –7x2y2z2?
- (A) –7xy2z2
- (B) –7y2z2
- (C) 7y2z2
- (D) 0
25. Simplified value of the expression 3x2yz2 – 3xy2z + x2yz2 + 7xy2z is
- (A) 4x2yz2 + 4xy2z
- (B) 4x2yz2 – 4xy2z
- (C) –4x2yz2 + xy2z
- (D) –x2yz2 + xy2z
24. Simplified value of the expression 2a + 2b + 2c – 2a – 2b – 2c – 2b + 2c + 2a is
- (A) 2c – 2a – 2b
- (B) 2a – 2b + 2c
- (C) 2b – 2c – 2a
- (D) 2c – 2a + 2b
23. Value of adding the expressions ab + bc + ca and – bc – ca – ab is
- (A) –2bc + ca – 2ab
- (B) 2ab
- (C) 2(bc + ca + ab)
- (D) 0
22. Value of adding the expressions uv – vw, vw – wu and wu – uv is
- (A) uv – vw + wu
- (B) uv + vw – wu
- (C) 0
- (D) – uv – vw – wu
21. Result of subtracting x4 + 3x3y3 + 7y4 from 2x4 – x3y3 + 7y4 is
- (A) 2x4 – x3y3
- (B) x4 – x3y3
- (C) x4 – 3x3y3
- (D) –x4 + x3y3
20. Result of subtracting ab – bc – ca from – ab + bc + ca is
- (A) –2ab + bc + ca
- (B) –2ab + 2bc + ca
- (C) –2ab + 2bc + 2ca
- (D) –2ab + bc + 2ca
19. What should be added to x3 + 3x2y + 3xy2 + y3 to get x3 + y3?
- (A) 3x2y + 3xy2
- (B) 3x2y – 3xy2
- (C) –3x2y + 3xy2
- (D) –3x2y – 3xy2
18. What should be subtracted from –7mn + 2m2 + 3n2 to get m2 + 2mn + n2?
- (A) –5mn + 2m2 + n2
- (B) –5mn + m2 + 2n2
- (C) –mn + m2 + n2
- (D) –mn – 2m2 – 3n2
17. To what expression must ab – bc – ca + 1 be added to make the sum zero?
- (A) ab – bc – ca + 1
- (B) –ab – bc – ca – 1
- (C) –ab + bc + ca – 1
- (D) ab + bc + ca + 1
16. To what expression must 99x3 – 33x2 – 13x – 41 be added to make the sum zero?
- (A) 99x3 + 33x2 + 13x – 41
- (B) –99x3 – 33x2 + 13x + 41
- (C) –99x3 + 33x2 + 13x + 41
- (D) 99x3 + 33x2 + 13x + 41