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Q : 7 Using $a^2-b^2=(a+b)(a-b)$ , find.

(iii) $153^2-147^2$

Answers (1)

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We know,

$a^2-b^2=(a+b)(a-b)$

Using this formula,

$153^2-147^2$ = (153 - 147)(153 +147)

=(6) (300)

= 1800

Posted by

HARSH KANKARIA

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