Question

½a×½a-½a×2.5b+¼b×½a-¼b×2.5

Answer 1

Answer:

0.25a^2 - 1.125ab - 0.625b

Step-by-step explanation:

1/2a x 1/2a = 1/4a^2

1/2a x 2.5b = 1.25ab

1/4b x 1/2a = 1/8ab

1/4b x 2.5 = 0.625b

0.25a^2 - 1.25ab + 0.125ab - 0.625b = 0.25a^2 - 1.125ab - 0.625b