Question

40. (a + b)2 – 2ab = ___________ + ____________

41. (x + a) (x + b) = x2 + (a + b) x + ________.

42. The product of two polynomials is a ________.

43. Common factor of ax2 + bx is __________.

44. Factorised form of 18mn + 10mnp is ________.

45. Factorised form of 4y2 – 12y + 9 is ________.

46. 38x3y2z ÷ 19xy2 is equal to _________.

47. Volume of a rectangular box with length 2x, breadth 3y and height

4z is _________.

48. 672 – 372 = (67 – 37) × ________ = _________.

49. 1032 – 1022 = ________ × (103 – 102) = _________.

50. Area of a rectangular plot with sides 4x2 and 3y2 is __________.​

Answer 1

Answer:

40. a2+b2

41. ab

42. polynomial

43. x

44. 2mn(9+5p)

45. (2y-3)2

46. 3*2z/y

47. 24xyz

48. (67-37)*10=300

49. 10*(103-102)= 10

50. 48xy

hope it helped a bit