Question

Calculate 4√28 - 3√7

Answer 1

4 root 28 - 3 root 7

=4 root 7×4 - 3 root 7

= 8 root 7 - 3 root 7

= 5 root 7

Answer 2

$4 \sqrt{28} - 3 \sqrt{7} \\ 4 \sqrt{4 \times 7} - 3 \sqrt{7 } \\ 4 \times 2 \sqrt{7 } - 3 \sqrt{7} \\ 8 \sqrt{7} - 3 \sqrt{7 } \\ 5 \sqrt{7}$
This is ur answer



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