Question

\sqrt{ {7 \times 1}^{2} } + \frac{13}{12 + \sqrt{3} } + \sqrt{2 \times 5 {}^{2} } + (9 \times 1) + \frac{5}{ 2} + x + y
7×1
2

​
+
12+
3
​

13
​
+
2×5
2

​
+(9×1)+
2
5
​
+x+y
Solve by the substitution method​

Answer 1

Answer:

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Step-by-step explanation:

how i give....

Answer 2

Answer:

Uses of heavy water:

Heavy water is used as neutron moderator in nuclear reactors.

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