(y+x)^2=(x+y)^2
so
(x+y)^2+(x^2-2xy+y^2)
= (x^2+2xy+y^2)+(x^2-2xy+y^2)
= x^2+2xy+y^2+x^2-2xy+y^2
= x^2+x^2-2xy+2xy+y^2+y^2
= 2x^2+2y^2
if u want to simplify it more then it will be written as: 2(x^2+y^2)
The answer would be 2 because 3+3+6+6=18 and the number of sticky notes and envelopes are equal.
Answer:
Step-by-step explanation:
tan(angle) = 6/20
angle = = 16.699 degrees
Answer: This is what Khan Academy said the answer was
Base times Height
what ever the number on top is you're going to multiply is by the dotted line
so if the dotted line is 16 than that makes its 16 times 5
if it's 4 than it is going to be 5 times 4