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[tex] \: \: \: \: [/tex]
[tex] = {a}^{2} \: {b}^{2} - {b}^{2} \: {c}^{2} [/tex]
Step-by-step explanation:
[tex](ab + bc)(ab - bc)[/tex]
[tex](ab {)}^{2} - (bc {)}^{2} [/tex]
[tex] = {a}^{2} {b}^{2} - {b}^{2} {c}^{2} [/tex]