In Each of the Following, Find the Value of 'A': 4x2 + Ax + 9 = (2x + 3)2 - Mathematics

Find the value of 'a': 4x² + ax + 9 = (2x + 3)²

Sum

4x² + ax + 9 = (2x + 3)²Comparing coefficients of x terms, we get
ax = 12x
so, a = 12

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Expansion of Formula

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Chapter 4: Expansions (Including Substitution) - Exercise 4 (D) [Page 64]

Chapter 4 Expansions (Including Substitution)
Exercise 4 (D) | Q 13.1 | Page 64

Expand : ( x + 8 ) ( x + 10 )

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(i) `x - 1/x`

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

If 2( x² + 1 ) = 5x, find :
(i) `x - 1/x`

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

Find the value of 'a': 4x² + ax + 9 = (2x - 3)²

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