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Problem
Problem
Find all solutions to each of the following equations: a.
r
2
−
7
r
=
0
r^2 - 7r = 0
r
2
−
7
r
=
0
b.
x
2
+
3
x
=
7
x
−
x
2
x^2 + 3x = 7x - x^2
x
2
+
3
x
=
7
x
−
x
2
c.
2
t
2
=
242
2t^2 = 242
2
t
2
=
242
d.
16
−
y
2
=
−
4
16 - y^2 = -4
16
−
y
2
=
−
4
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