Maharashtra State BoardSSC (English Medium) 8th Standard
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Expand. (A+2)(A−1) - Mathematics

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Sum

Expand.

(a+2)(a−1)

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Solution

It is known that,

(x+a) (x+b) = x2 + (a+b)x + ab

(a+2) (a−1)

= (a)2 + {2 + (-1)}a + (2) × (-1)

= a2 + (2-1)a-2

= a2 + a - 2

Concept: Expansion of (x + a)(x + b)
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APPEARS IN

Balbharati Mathematics 8th Standard Maharashtra State Board
Chapter 5 Expansion formulae
Practice Set 5.1 | Q 1 | Page 24
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