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Reubenfamily12go
Answered

14. Find the difference: (2r² + 6r + 7) -(3r² +5r +8)
A. r² +r +1
C. r² -r-1
B. r² +r-1
D. -r² +r-1​

Sagot :

Smartsharer98go

Answer:

D. -r² +r-1​

Step-by-step explanation:

(2r^2 - 3r^2) + (6r - 5r) + (7 - 8)

= -r² +r-1

Aureatenarchygo

Answer:

D. -r²+r-1

Step-by-step explanation:

Remove parentheses and change its sign,

2r²+6r+7-3r²-5r-8

And collect like terms,

-r²+r-1

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