What algebraic expression must be subtracted from the sum of y2+5y−1 y 2 + 5 y

Question

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

y

2

+

5

y

1

and 3y2−2y+4

3

y

2

2

y

+

4

to give 2y2+7y−2

2

y

2

+

7

y

2

as the result?

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Athena 2 months 2021-10-12T02:05:27+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-10-12T02:07:25+00:00

    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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45:7+7-4:2-5:5*4+35:2 =? ( )