Question

48. (999)
(995)' =
(a) 1894
(b) 1994
(c) 2094
(d) 7976
49. -3x?y2 + x?y? - 2x”y2 = ?
(a) 4x?y2
(b) 6x?y2
(c) -4x?y?
(d) -6x?y2
50. The area of rectangle is 5(y + 3) (y? - 16). It's
one side is 5(y? - y - 12). What is its other
side?
(a) (y - 12) (b) (y - 15) (c) (y - 4)
(c)(y-4) (d) (y + 4)
51. Twenty one added to thrice a whole numbe​

Answer 1

Answer:

so basically mathematical expressions are math expressing things

Explanation:

thirdyyyy you're welcome

Answer 2

Answer:

basically mathematical