Question

squares.
13. In each of the following, find the value of a
(1) 4x2 + ax + 9 = (2x + 3)2
(ii) 4x2 + ax + 9 = (2x - 3)2
(iii) 9x2 + (7a – 5)x + 25 = (3x + 5)2
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Answer 1

Here is your answer

Answer 2

I) 12

2) -12

3)5

first solve their squares using (a+b)² and (a-b)² formula then equate values for 2ab or - 2ab