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add
(5x⁴ - 3x² + 4) + (6x³ minus 4² - 7)

subtract
(5x³ - 7x² + 3x - 4) - (8x³ + 2x² + 3x - 7)​


Sagot :

Answer:

*Add*

(5x⁴-3x²+4)+(6x³-4²-7)

=5x⁴+6x³-3x²-19

*Subtract*

(5x³-7x²+3x-4)-(8x³+2x²+3x-7)

=3x³-9x²+3