6. Simplify:
(i) 2p8 - 3p? + 4p - 5 - 6p +2p? - 8p - 2 +6p + 8
(ii) 2x² - xy + 6x - 4y + 5xy - 4x + 6x2 + 3y
(iii) x4 - 6x + 2x - 7 + 7x3 - x + 5x2 + 2 - x4
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Step-by-step explanation:
i) 2p8 - 3p? + 4p - 5 - 6p +2p? - 8p - 2 +6p + 8
= 2p8 - 3p?+2p? + 4p -6p -8p +6p -5 -2 -8
= 2p8 -p? +10p - 14p -15
= 2p8 -p? -4p -15
ii) 2x² - xy + 6x - 4y + 5xy - 4x + 6x2 + 3y
= 2x² +6x² - xy +5xy +6x -4x -4y +3y
= 8x² +4xy + 2x -y
iii) x4 - 6x + 2x - 7 + 7x3 - x + 5x2 + 2 - x4
= x4 - x4 -6x +2x -x -7 +2 + 7x3 +7x2
= -5x-5 + 7x3 +7x2
or
= 7x3 +7x2 - 5x -5
hope you got the answer!!
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