Question

4. Simplify:
(a) (7x4 - 7x* + 7x + 2x) + (-5x* + 7x2 + 5x2 -9)
(b) (7x4 - 6X° + 9x² + 3x) + (-4x4 + 6x3 + 4x2 - 10)
(c) (8x - 4x + 9x - 4)-(-9x6 - 6x + 4x2 - 9)
(d) (9x? - 2x5 + 9x - 2) - (-2x - 7x5 + 8x2 - 3)​

Answer 1

Answer:

(a)249

(b)131

(c)7477

Step-by-step explanation: