Exercise 1 kindly Make the Answers written by computer Use

Exercise 1. ( kindly Make the Answers written by computer )

Use the FOIL to expand the following: 1. (4y 8003y 7) 2. (4w 80 (w 3) 3. (-x 500-x 5) 4. (2x 4)2

Solution

(4y-8)(3y+7) = (4y)*(3y) + (4y)*7 +(-8)*(3y)+(-8)*7 = 12y2+28y -24y -56 = 12y2 +4y -56. (4w-8)(w+3) = (4w)*w + (4w)*3 + (-8)*w+ (-8)*3 = 4w2+12w -8w -24 = 4w2+ 4w -24. (-x-5)(-x+5) = (-x)*(-x) + (-x)*5 + (-5)*(-x)+ (-5)*5 = x2 -5x +5x -25 = x2 -25. (2x+4)2 = (2x+4)(2x+4) = (2x)*(2x)+ (2x)*4 + 4*(2x) +4*4 = 4x2 +8x+8x +16 = 4x2 +16x +16