8. 4(2a - 3b)²- (2b - c)²
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Answer:
16a²‐48ab+32b²+4bc‐c²
Step-by-step explanation:
4(2a‐3b)²-(2b-c)²
4(4a²‐12ab+9b²)‐(4b²‐4bc+c²)
16a²‐48ab+36b²‐4b²+4bc‐c²
16a²‐48ab+32b²+4bc‐c²
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