4(2a-3b) ^2-(2b-c) ^2

Answers 1

Answer:

[tex]4(2a-3b) ^2-(2b-c) ^2[/tex]

[tex] = 4(4a^{2} - {9b}^{2} - 72ab ) - ({4b}^{2} - {c }^{2} - 8bc )[/tex]

[tex] = {16a }^{2} - {36b}^{2} - 288ab - {4b}^{2} + {c }^{2} + 8bc[/tex]

[tex]= {16a }^{2} - {40b}^{2} - 288ab + {c }^{2} + 8bc[/tex]

Step-by-step explanation:

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