a) .(4x² - 1) + (x + 3x² - 6x - 2) = 7x² - 5x-3
b) .(5x2 + 2x + 4) + ( 8x2- 3x – 1) = 13x²- x+3
c) .(5x - 4 + 8x2) + (2x - 4x3 + 1 - 5x2) = 7x + 3x²- 4x³ -3
d).(4x² - 4x - 1) + ( 3x² - 6x - 2) = 7x² - 10x - 3
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Verified answer
a) .(4x² - 1) + (x + 3x² - 6x - 2) = 7x² - 5x-3
b) .(5x2 + 2x + 4) + ( 8x2- 3x – 1) = 13x²- x+3
c) .(5x - 4 + 8x2) + (2x - 4x3 + 1 - 5x2) = 7x + 3x²- 4x³ -3
d).(4x² - 4x - 1) + ( 3x² - 6x - 2) = 7x² - 10x - 3