SSC (English Medium) Class 8Maharashtra State Board
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Expand. (9x−5t)(9x+3t) - SSC (English Medium) Class 8 - Mathematics

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Question

Expand.

(9x−5t) (9x+3t)

Solution

(9x−5t) (9x+3t)

= (9x)2 + {(-5t) + (3t)} (9x) + (-5t)×(3t)

= 81x2 + (-2t)(9x) - 15t2

= 81x2 - 18xt - 15t2

  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: 6 | Page no. 24
Solution Expand. (9x−5t)(9x+3t) Concept: Expansion of (X + A) (X + B).
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