Evaluate
8r^{2}-2rs+3r+17s
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8r^{2}-2rs+3r+17s
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-\left(2rs-3r-21s-4\left(2r^{2}-s\right)\right)
Use the distributive property to multiply -3 by r+7s.
-\left(2rs-3r-21s-8r^{2}+4s\right)
Use the distributive property to multiply -4 by 2r^{2}-s.
-\left(2rs-3r-17s-8r^{2}\right)
Combine -21s and 4s to get -17s.
-2rs+3r+17s+8r^{2}
To find the opposite of 2rs-3r-17s-8r^{2}, find the opposite of each term.
-\left(2rs-3r-21s-4\left(2r^{2}-s\right)\right)
Use the distributive property to multiply -3 by r+7s.
-\left(2rs-3r-21s-8r^{2}+4s\right)
Use the distributive property to multiply -4 by 2r^{2}-s.
-\left(2rs-3r-17s-8r^{2}\right)
Combine -21s and 4s to get -17s.
-2rs+3r+17s+8r^{2}
To find the opposite of 2rs-3r-17s-8r^{2}, find the opposite of each term.
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