​​​​​​​\\\text{If } A_{1} \text{ and } A_{2} \text{ are two vectors such that } \left|A_{1}\right|=3 \text{ and } \left|A_{2}\right|=5 \\ \text{ and } \left|A_{1}+A_{2}\right|= 5, \text{ the value of } \left(2 A_{1}+3 A_{2}\right) \cdot\left(2 A_{1}-2 A_{2}\right) \text{ is} -​​​​​​​

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