I don't see the grid? did you attach a photo?
You multiply fractions simply by multiplying numerators and denominators with each other:

Answer:
534
Step-by-step explanation:
multiply 13.45 by 40 and you will get 534
Answer:
a²- b²=(a+b)(a-b)
a² + b²=(a+b)²-2ab or (a-b)²+2ab
(a + b)³=a³+3a²b+3ab²+b³ or, a³+b³+3ab(a+b)
Answer:
Please post a picture of the given triangle.
Step-by-step explanation: