SSC (English Medium) Class 8Maharashtra State Board
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Expand. (A+2)(A−1) - SSC (English Medium) Class 8 - Mathematics

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Question

Expand.

(a+2)(a−1)

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

  Is there an error in this question or solution?

APPEARS IN

 Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 5: Expansion formulae
Practice Set 5.1 | Q: 1 | Page no. 24
Solution Expand. (A+2)(A−1) Concept: Expansion of (X + A) (X + B).
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