Question

find the square root of: 0.09+2×0.21+0.49​

Answer 1

Answer:

0.09+2×0.21+0.49

⇒

(0.3)

2

+2×0.3×0.7+(0.7)

2

∵(a+b)

2

=a

2

+2ab+b

2

∴

(0.3+0.7)

2

=

1

=1

Answer 2

$\huge{\underlinel{\boxed{\green{\mathfrak{ANSWER:-}}}}}$

$\sqrt{0.09 + 2 \times 0.21 + 0.49} \\ \sqrt{0.09 + 0.42 + 0.49} \\ = > \sqrt{1} \\ = 1$

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