Question

from the sum of 3x²+7y and 4x²-2y+9 subtract the sum of 15-7x²-12y and 5x²+3y-25​

Answer 1

Answer:

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Answer 2

Answer:

sum of a) 3x^2+7y+( 4x^2- 2y+9)

= 3x^2+7y+4x^2-2y+9

= 3x^2+4x^2+7y-2y+9

= 7x^2+5y+9

sum of b) 15-7x^2-12y+(5x^2+3y-25)

=15-7x^2-12y+5x^2+3y-25

= 15-25-7x^2+5x^2-12y+3y

= (-10)-2x^2-9y

ATQ

subtract(-10)-2x^2-9y from 7x^2+5y+9

7x^2+5y+9-((-10)-2x^2-9y)

7x^2+5y+9+10+2x^2+9y

7x^2+2x^2+5y+9y+9+10

9x^2+14y+19

hope this helps you out

thank u