. Simplify the following algebraic expressions: (6 marks)
a) 3𝑥
2 − 5𝑥𝑦 − 7𝑥
2 + 2𝑦 − 3𝑥𝑦 − 6𝑦
b) 6𝑎
2𝑏 + 3𝑎𝑏2 − 2𝑎
2𝑏 − 4𝑎𝑏2 + 3𝑎
2𝑏
2
c) 8𝑦 × (−5𝑦) + 8𝑦
3
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