Question

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$y {}^{2} + 2y - 5 \: \: \: \ \: \:\: \:y {}^{3} + 2y {}^{2} + 3y + 4 \: \: \: \: \: \: \: y {}^{3} + 7y - 2$

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Answer 1

Answer

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step by step:

1)y²+2y-5

=y²(+×-)5

=5-2=3

Ans .3y

2)y³+2y²+3y+4

=y3(+×+×+)4

=4+3+2=9

Ans .9y

3)y³+7y - 2

=y³(+×-)2

=7-2=5

Ans.5y

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