8. Simplity
(i) (2x + y) (1 + 4x + 3y) - 6x(x + y)
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Answer:
6 is the correct answer
qwertyuiop
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Step-by-step explanation:
(2x + y) (1 + 4x + 3y) - 6x(x + y)
= 2x(1+4x+3y) + y(1+4x+3y) - (6x²+6xy)
= 2x + 8x² + 6xy + y + 4xy + 3y² - 6x² - 6xy
= 8x² - 6x² + 3y² + 2x + y + 6xy - 6xy + 4xy
= 2x² + 3y² + 2x + y + 4xy
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