Subtract these algebric expressions
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Step-by-step explanation:
(vii)
7x² - 8xy + 3y² - 5 - (7xy + 5x² - 7y² + 3)
7x² - 8xy + 3y² - 5 - 7xy - 5x² + 7y² - 3
7x² - 5x² - 8xy - 7xy + 3y² + 7y² - 5 - 3
2x² - 15xy + 10y² - 8
(viii)
x⁴ - 3x³ - 2x² + 3 - (2x⁴ - 7x² - 5x + 3)
x⁴ - 3x³ - 2x² + 3 - 2x⁴ + 7x² + 5x - 3
x⁴ - 2x⁴ - 3x³ - 2x² + 7x² + 3 - 3
-x⁴ - 5x³ + 7x²
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