Step-by-step explanation:
x²-y²=12
(x-y)(x+y)=12
but x-y=4
4(x+y)=12
x+y=12/4
x+y=3
lets make x the subject of the formula
x=3-y
since x-y=4
(3-y)-y=4
3-y-y=4
-2y=1
y=-1/2
then x=3-y
x=3-(-1/2)
x=(6--1)/2
x=7/2
therefore; x²+2xy+y
=(7/2)²+2×7/2×-1/2+(-1/2)
=49/4-7/2-1/2
=(49-14-2)/4
=33/4
=8.25
=8
Answer:
there are 20 different combinations if that was the question.
Step-by-step explanation:
Formula :
Combination(event 1) times Combinations (Event2)
The correct answer is y = 1/8x^2
E importance of reconciling a bank<span> statement. ... Demonstrate the ability to </span>balance<span> a checkbook and ... She only </span>needs<span> $25, </span>but<span> ... Alexis </span>has<span> no idea how ... As a customer, </span>you should<span> be familiar with the fees at </span>your bank<span>. If </span>you<span> ... a safe place until </span>you get<span> home; then use it to record how</span>much you<span> removed from.</span>
