Question

Q3. Simplify √63 x √28​

Answer 1

Answer:

$\sqrt{63} \times \sqrt{28} \\ = \sqrt{3 \times 3 \times 7} \times \sqrt{2 \times 2 \times 7} \\ = \sqrt{3 \times 3 \times 7 \times 2 \times 2 \times 7} \\ = 3 \times 2 \times 7 \\ = 6 \times 7 \\ = 42$

Answer 2

Step-by-step explanation:

63

×

28

=

3×3×7

×

2×2×7

=

3×3×7×2×2×7

=3×2×7

=6×7

=42