Question

Solve (2a+3b)²- 4c²
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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

(2+3)² − 4²

(2+3)(2+3) − 4²

[2(2+3)] + [3(2+3)] − 4²

[4²+6] + [3(2+3)] − 4²

[4²+6] + [6+9²] − 4²

4²+12+9²−4²