320
1*40 2*20 5*8
1*40 4*10 5*8 2*20
1 x 40 = 40 2 x 20 = 40 4 x 10 = 40 5 x 8 = 40
x2 + 13x + 40 = x2 + 5x + 8x + 40 = x(x + 5) + 8(x + 5) = (x + 8)(x + 5)
8 X 40 = 320 or 8 x 5 = 40
-x^2 -13x -40 = -(x^2 + 13x + 40) = -(x + 5)*(x + 8)-x^2 -13x -40 = -(x^2 + 13x + 40) = -(x + 5)*(x + 8)-x^2 -13x -40 = -(x^2 + 13x + 40) = -(x + 5)*(x + 8)-x^2 -13x -40 = -(x^2 + 13x + 40) = -(x + 5)*(x + 8)
320
8x + 8=40 8x=40-8 8x=32 x=32/8 x=4
x2 + 3x - 40 = x2 + 8x - 5x - 40 = x(x + 8) - 5(x + 8) = (x - 5)(x + 8)
8 divided by 10 gives 10%, which is 0.8. This is simply multiplied by 4 to find 40%, which is 3.2
5/8 x 40 = 25
1*40 2*20 5*8
13
1*40 4*10 5*8 2*20
Volume = H x L x W 40 = H x 4 x 2 40 = H x 8 40/8 = (H x 8)/8 5 = H
3/8 of 40 = 3/8 x 40 = 15