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Find the value of a, if 8a = 352 – 272 - Mathematics

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Question

Find the value of a, if 8a = 352 – 272 

Sum

Solution

We have,

8a = 352 – 272 

⇒ 8a = (35 + 27)(35 – 27)  ...[Using the identity, a2 – b2 = (a + b)(a – b)]

⇒ 8a = 62 × 8

⇒ `a = (62 xx 8)/8`

⇒ a = 62

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Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 238]

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NCERT Exemplar Mathematics [English] Class 8
Chapter 7 Algebraic Expression, Identities and Factorisation
Exercise | Q 114. (i) | Page 238
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