Expand : (X - 8) (X + 10) - Mathematics

Expand : ( X - 8 ) ( X + 10 )

Sum

( X - 8 ) ( X + 10 ) = X² - ( 8 - 10 )X - 8 x 10
= X² + 2X - 80

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Expansion of Formula

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Chapter 4: Expansions (Including Substitution) - Exercise 4 (C) [Page 62]

Chapter 4 Expansions (Including Substitution)
Exercise 4 (C) | Q 1.3 | Page 62

Expand : `( 2x - 1/x )( 3x + 2/x )`

Expand : ( x - 2y + 2 )²

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If a + `1/a` = m and a ≠ 0 ; find in terms of 'm'; the value of :
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(i) `x - 1/x`

(ii) `x^3 - 1/x^3`

The difference between two positive numbers is 4 and the difference between their cubes is 316.
Find : Their product

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Find : The sum of their squares

The sum of two numbers is 7 and the sum of their cubes is 133, find the sum of their square.