Answer:
255b
Step-by-step explanation:
subtract 256b by b
I got ECHA... hope it's right:)
Answer:
4y is not a like term.
Step-by-step explanation:
Unlike the other variables, 4y has a y instead of an x. The numbers with an x variable can all be combined, but 4y can't be combined with an x variable.
The reflection across the x-axis only change the signal of the y coordinate. Hence, the new point is
.
