11. Use algebraic methods to find the following.
(1) 522square
(v) 962square
(ii) 982square
(vi) 3052square
Answers
Answer:
gjj xx
Step-by-step explanation:
dub j Kno in kohfgjj
Answer:
I don't know the answer but I know some examples
Step-by-step explanation:
Solve for x and y.
Equation A:
y
+
x
=
3
Equation B:
x
=
y
+
5
Show Solution
The goal of the substitution method is to rewrite one of the equations in terms of a single variable. Equation B tells us that
x
=
y
+
5
, so it makes sense to substitute
y
+
5
into Equation A for x.
y
+
x
=
3
x
=
y
+
5
Substitute
y
+
5
into Equation A for x.
y
+
x
=
3
y
+
(
y
+
5
)
=
3
Simplify and solve the equation for y.
2
y
+
5
=
3
−
5
−
5
––––––––––
2
y
=
−
2
y
=
−
1
Now find x by substituting this value for y into either equation and solve for x. We will use Equation A here.
y
+
x
=
3
−
1
+
x
=
3
+
1
+
1
––––––––––––
x
=
4
Finally, check the solution
x
=
4
,
y
=
−
1
by substituting these values into each of the original equations.
y
+
x
=
3
−
1
+
4
=
3
3
=
3
TRUE
x
=
y
+
5
4
=
−
1
+
5
4
=
4
TRUE
Answer
x
=
4
and
y
=
−
1
The solution is
(
4
,
−
1
)
.