Hi hi hi guyz, please solve da question in the attachment... With explanation pleasee! Thanks❤
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8.
(a) p² - 7pq - q² + (3p² - 2pq + 7q²)
=> p² - 7pq - q² + 3p² - 2pq + 7q²
=> p² + 3p² - 7pq - 2pq -q² +7q²
=> 4p² - 9pq + 6q² [Ans]
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(b)x³ - x²y - xy² - y³ + (x³ - 2x²y + 3xy² + 4y)
=>x³ - x²y - xy² - y³ + x³ -2x²y + 3xy² + 4y
=>x³ + x³ - x²y - 2x²y - xy² + 3xy² - y³ + 4y
=>2x³ - 3x²y + 2xy² - y³ + 4y [Ans]
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(c) ab + bc + ca + (-bc - ca - ab)
=> ab + bc + ca - bc - ca - ab
=> ab - ab +bc - bc + ca - ca
=> 0 [Ans]
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