(2x + 3a ) (2x - 3a) + ( 2x - 5a)(2x + 5a )
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Step-by-step explanation:
Using ( a - b ) ( a + b ) = a² - b²
simplify the product
(2x + 3a ) (2x - 3a) + ( 2x - 5a)(2x + 5a )
= 4x²- 9a² + ( 2x - 5a ) × ( 2x - 5a )
= 4x²- 9a² + 4x² - 25a²
Collect like terms
= 8x²- 9a²- 25a²
= 8x²- 34a²
The solution is
= 8x²- 34a²
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