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(3q + 7p^2 – 2r^3 + 4) – (4p^2 – 2q + 7r^3 – 3) = ? A. (p^2 + 2q + 5r^2 + 1)

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(3q + 7p2 – 2r3 + 4) – (4p2 – 2q + 7r3 – 3) = ?

A. (p2 + 2q + 5r2 + 1)

B. (11p2 + q + 5r3 + 1)

C. (-3p2 - 5q + 9r3 - 7)

D. (3p2 + 5q - 9r3 + 7)

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1 Answer

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(3q + 7p2 - 2r3 + 4) - (4p2 - 2q + 7r3 - 3) = ?

After solving the bracket,

we get,

= 3q + 7p2 – 2r3 + 4 – 4p2 + 2q – 7r3 + 3 = 7p2 – 4p2 + 3q + 2q – 2r3 – 7r3 + 3 + 4

= 3p2 + 5q – 9r3 + 7

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