What is (10+7r-r^2)+(-6r^2-18+5r) ?

The solution to (10+7r-r^2)+(-6r^2-18+5r) is -7r^2+12r-8

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simplify (10+7r-r^2)+(-6r^2-18+5r)

simplify

(10 + 7 r - r^{2}) + (- 6 r^{2} - 18 + 5 r)

- 7 r^{2} + 12 r - 8

Solution steps

(10 + 7 r - r^{2}) + (- 6 r^{2} - 18 + 5 r)

Simplify

(10 + 7 r - r^{2}) + (- 6 r^{2} - 18 + 5 r) : 10 + 7 r - r^{2} - 6 r^{2} - 18 + 5 r

= 10 + 7 r - r^{2} - 6 r^{2} - 18 + 5 r

Add similar elements:

- r^{2} - 6 r^{2} = - 7 r^{2}

= 10 + 7 r - 7 r^{2} - 18 + 5 r

Group like terms

= - 7 r^{2} + 7 r + 5 r + 10 - 18

Add similar elements:

7 r + 5 r = 12 r

= - 7 r^{2} + 12 r + 10 - 18

Subtract the numbers:

10 - 18 = - 8

= - 7 r^{2} + 12 r - 8

z + (z + 6)

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- 4 + - 75 - 9 + - 27

\frac{6}{4} - \frac{4}{3}

\frac{x ^{3} - 3 x ^{2} + 2 x}{x ^{4} - 8 x}

What is (10+7r-r^2)+(-6r^2-18+5r) ?
The solution to (10+7r-r^2)+(-6r^2-18+5r) is -7r^2+12r-8