X2 - 16, is the answer. The first one.
x^2 - 16 = (x)^2 - 4^2, difference of two squares :)
Answer:
No because you can split a tree
Step-by-step explanation:
Hey! a+5=7 means that a is the variable, while seven is the answer. My technique is like this: 7-5=2 You need to subtract the numbers you already have. This only works for addition! Hope this helps :) !
Answer:
x=1
Step-by-step explanation:
1-2x=-3x+2
-1=-x
1=x
