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

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Question

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

Sum

Solution

4x2 + ax + 9 = (2x - 3)2
Comparing 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]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 4 Expansions (Including Substitution)
Exercise 4 (D) | Q 13.2 | Page 64
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