4. Subtract the following algebraic expressions vertically.
a) (7x2 — 4xy + 5y2 – 5x + 2y) – (5x2 + 4y2 + 2y – 4)
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4. Subtract the following algebraic expressions vertically.
a) (7x2 — 4xy + 5y2 – 5x + 2y) – (5x2 + 4y2 + 2y – 4)
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