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Mathematics
Mathematics
Problem
Find all solutions to the following equations: a.
t
2
−
8
t
+
7
=
0
t^2 - 8t + 7 = 0
t
2
−
8
t
+
7
=
0
b.
72
+
6
x
=
x
2
72 + 6x = x^2
72
+
6
x
=
x
2
c.
2
r
2
−
4
r
=
70
2r^2 - 4r = 70
2
r
2
−
4
r
=
70
d.
x
(
x
+
10
)
=
10
(
−
10
−
x
)
x(x + 10) = 10(-10 - x)
x
(
x
+
10
)
=
10
(
−
10
−
x
)
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