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Mathematics
Problem
Victor has completed this question. Can you spot any mistakes?
a
2
+
b
2
=
c
2
7
2
+
25
2
=
x
2
49
+
625
=
x
2
674
=
x
2
x
2
=
674
x
=
25.96
cm
\begin{aligned} a^2 + b^2 &= c^2 \\ 7^2 + 25^2 &= x^2 \\ 49 + 625 &= x^2 \\ 674 &= x^2 \\ x^2 &= 674 \\ x &= 25.96\text{cm} \end{aligned}
a
2
+
b
2
7
2
+
2
5
2
49
+
625
674
x
2
x
=
c
2
=
x
2
=
x
2
=
x
2
=
674
=
25.96
cm
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