Answer:
Going clockwise from top left corner to bottom left corner answers are
1
2a³/4
x² + x -2
2x² -6x
Explanation:
Area of rectangle is L x B where L is the length and B is the breadth
Going clockwise from upper left corner,
We simply multiply the numerators and denominators separately. Then express the numerator product/denominator product
1. Ans = 3/7 x 21/9 (3 x 21)/(7 x 9) = 63/63 = 1
2. Ans = (2a²/b) x (ab/4) = (2a²)(ab)/b(4) = 2a³b/4b = 2a³/4
3. Ans = (x+2)(x-1) = x² -1x + 2x -2 = x² + x -2 (Use the FOIL method)
4. Ans = (x-3)(2x) = 2x(x) -2x(3) = 2x² -6x