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Harman [31]
3 years ago
10

What algebraic expression must be subtracted from the sum of y2+5y−1

Mathematics
1 answer:
ss7ja [257]3 years ago
7 0

Answer:

2y² -4y +5

Step-by-step explanation:

First you need to find the sum of y²+5y-1 and 3y²-2y+4

(y²+5y-1) + (3y²-2y+4) => y²+3y²+5y-2y-1+4

                                  =4y²+3y+3

Next is to subtract 2y²+7y-2 from the sum calculated above in order to  find the algebraic expression asked in the exercise

4y²+3y+3 -(2y²+7y-2) => 4y²-2y²+3y-7y+3+2

                                   =2y² -4y +5

Therefore, the algebraic expression asked must be 2y² -4y +5

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Answer:

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Explanation:

\hookrightarrow\sf 10x^3-35x^2-12x+42

using associative property, separate

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take common term, factorise

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final answer

\hookrightarrow\sf \left(2x-7\right)\left(5x^2-6\right)

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