Question

2y²-y-21=0. factorise method

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Answer 1

Answer:

$= 2y²-y-21=0</p><p></p><p>=2y²-7y+6y-21=0. 42=7x6</p><p></p><p>=y(2y-7 )+3(2y-7) =0</p><p></p><p>=(y-3) (2y-7) =0</p><p></p><p>=y+3=0 or 2y-7=o</p><p></p><p>=y=-3 or y =7/2</p><p></p><p>$

Step-by-step explanation:

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Answer 2

Answer:

y= -3 or y=7/2

Step-by-step explanation:

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