destinyparker20 destinyparker20

27-05-2018
Mathematics

contestada

Find the difference (3-13x-7x^2)-(5x^2+ 12x-10)

A.-12x^2-25x-7

B.-12x^2-25x+13

C.-12x^2-x-7

D.3x^2-25x-2

Respuesta :

Аноним Аноним

27-05-2018

3 - 13x - 7x^2 - (5x^2 + 12x - 10)
Distributing the negative over the parentheses chamges the signs:-
= 3 - 13x - 7x^2 - 5x^2 - 12x + 10
adding like terms:-
= -12x^2 - 25x + 13 (answer).

Its B

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