Question

Multiply 3√28 by 2√7​

Answer 1

Multiply 3
28
​
by 2
7
​
.
Answer
3
28
​
×2
7
​


It can also be written as

=3×2×
28
​
×
7
​


So we get

=6×
28×7
​


By multiplication

=6×
2×2×7×7
​


=(6×2×7)

3
28
​
×2
7
​
=84.
Mark me as brainiest

Answer 2

$3 \sqrt{28} \\ = 3 \sqrt{4 \times 7} \\ = 3 \sqrt{ {2}^{2} \times 7} \\ = 3 \times2 \sqrt{7} \\ = \underline{ \underline{6 \sqrt{7} }} \\ \\ 3 \sqrt{28} \times 2 \sqrt{7} \\ = 6 \sqrt{7} \times 2 \sqrt{7} \\ = 6 \times \sqrt{7} \times 2 \times \sqrt{7} \\ = 6 \times 2 \times {( \sqrt{7}) }^{2} \\ = 6 \times 2 \times 7 \\ \large{ \boxed{= \underline{ \underline{84}}}}$