factorise 32(a+b)²-18(a-b)²
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Step-by-step explanation:
32(a²+2ab+b²)-18(a²-2ab+b²)
32a²+64ab+32b²-18a²+36ab-18b²
32a²-18a²-32b²-18b²+64ab+36ab
14a²-50b²+100ab
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