Evaluate
\left(c-1\right)\left(2c+5\right)
Expand
2c^{2}+3c-5
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c^{2}+8c-7-\left(-c^{2}\right)-5c+2
To find the opposite of -c^{2}+5c-2, find the opposite of each term.
c^{2}+3c-7-\left(-c^{2}\right)+2
Combine 8c and -5c to get 3c.
c^{2}+3c-5-\left(-c^{2}\right)
Add -7 and 2 to get -5.
c^{2}+3c-5+c^{2}
Multiply -1 and -1 to get 1.
2c^{2}+3c-5
Combine c^{2} and c^{2} to get 2c^{2}.
c^{2}+8c-7-\left(-c^{2}\right)-5c+2
To find the opposite of -c^{2}+5c-2, find the opposite of each term.
c^{2}+3c-7-\left(-c^{2}\right)+2
Combine 8c and -5c to get 3c.
c^{2}+3c-5-\left(-c^{2}\right)
Add -7 and 2 to get -5.
c^{2}+3c-5+c^{2}
Multiply -1 and -1 to get 1.
2c^{2}+3c-5
Combine c^{2} and c^{2} to get 2c^{2}.
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