Write the prime factorization of the following numbers and hence find their square roots.
Write the prime factorization of the following numbers and hence find their square roots.
(i) 7744
(ii) 9604
(iii) 5929
(iv) 7056
(i) The prime factorisation of 7744:
$7744=2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 11 \times 11$
Grouping them into pairs of equal factors, we get:
$7744=(2 \times 2) \times(2 \times 2) \times(2 \times 2) \times(11 \times 11)$
Taking one factor from each pair, we get :
$\sqrt{7744}=2 \times 2 \times 2 \times 2 \times 11=88$
(ii) The prime factorisation of 9604:
$9604=2 \times 2 \times 7 \times 7 \times 7 \times 7$
Grouping them into pairs of equal factors, we get:
$9604=(2 \times 2) \times(7 \times 7) \times(7 \times 7)$
Taking one factor from each pair, we get:
$\sqrt{9604}=2 \times 7 \times 7=98$
(iii) The prime factorisation of 5929:
$5929=7 \times 7 \times 11 \times 11$
Grouping them into pairs of equal factors, we get:
$5929=(7 \times 7) \times(11 \times 11)$
Taking one factor from each pair, we get:
$\sqrt{5929}=7 \times 11=77$
(iv) The prime factorisation of 7056:
$7056=2 \times 2 \times 2 \times 2 \times 3 \times 3 \times 7 \times 7$
Grouping them into pairs of equal factors, we get:
$7056=(2 \times 2) \times(2 \times 2) \times(3 \times 3) \times(7 \times 7)$
Taking one factor from each pair, we get:
$\sqrt{7056}=2 \times 2 \times 3 \times 7=84$