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Verified answer
A.(2x + 5/4y) + (y + ½x)
= 2x + ½x + 5/4y + y
= 2½x + 1¼y + y
= 2½x + 2¼y
b.
(4p/q - 1/q)²
= (4p/q - 1/q)(4p/q - 1/q)
= 16p²/q² - 4p/q² - 4p/q² + 1/q²
= 16p²/q² - 8p/q² + 1/q²
= 16p² - 8p + 1/q²
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