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Expand (i) (a+ab−3b2)(a + ab - 3b^2)(a+ab−3b2) (4+b)(4 + b)(4+b), and (ii) (4y+7)(4y + 7)(4y+7) (y+11z−3)(y + 11z - 3)(y+11z−3).
(a+ab−3b2)(4+b)(a + ab - 3b^2)(4 + b)(a+ab−3b2)(4+b)
4a+5ab+ab2−12b2−3b34a + 5ab + ab^2 - 12b^2 - 3b^34a+5ab+ab2−12b2−3b3
(4y+7)(y+11z−3)(4y + 7)(y + 11z - 3)(4y+7)(y+11z−3)
4y2+44yz−5y+77z−214y^2 + 44yz - 5y + 77z - 214y2+44yz−5y+77z−21
(i) Multiply each term: 4a+ab+4ab+ab2−12b2−3b3=4a+5ab+ab2−12b2−3b34a + ab + 4ab + ab^2 - 12b^2 - 3b^3 = 4a + 5ab + ab^2 - 12b^2 - 3b^34a+ab+4ab+ab2−12b2−3b3=4a+5ab+ab2−12b2−3b3 (ii) Multiply each term: 4y2+44yz−12y+7y+77z−21=4y2+44yz−5y+77z−214y^2 + 44yz - 12y + 7y + 77z - 21 = 4y^2 + 44yz - 5y + 77z - 214y2+44yz−12y+7y+77z−21=4y2+44yz−5y+77z−21