Math, asked by saj52, 11 months ago

(10.2×9.8)use formula (a_b)(a+b)

Answers

Answered by manikiran1818

0

(a+b)(a-b)

given

substitute the values

let

a=10.2

b=9.2

(10.2+9.8)(10.2-9.8)

(20)(0.4)

=8

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Answered by Brâiñlynêha

9

$<body bgcolor="pink"> <font color="purple">$

$\huge{\boxed{\boxed{Hello!!}}}$

$\bf\huge\red{\underline{SOLUTION:-}}$

$\sf (10.2×9.8)$

$\sf (10+0.2)(10-0.2)$

$\sf It \:is\:on\:(a{}^{2}-b{}^{2})$

$\sf (a+b)(a-b)$

$\sf (10{}^{2}-0.2{}^{2})$

$\sf (100-0.04)$

$\implies\sf 99.96$

....Hope it's help....

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