5. Find the product of each pair of expressions.
(1) a² + a +1 and a-1
(iv) x-y-z and y + z
(ii) x2-x+1 and x +
(v) 4a² +2ab+b² and 2a-b
(vii) x²+x3+x²+1 and x-1 (viii)
6. Multiply.
x3+x²+x+1 and x2-1
(iii) x²+3x+5 and 2x-6
(vi) 3a3 +2a+1 and a² +5
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