What is (8r^2-7r-9)+(-r^2+r) ?

The solution to (8r^2-7r-9)+(-r^2+r) is 7r^2-6r-9

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simplify (8r^2-7r-9)+(-r^2+r)

simplify

(8 r^{2} - 7 r - 9) + (- r^{2} + r)

7 r^{2} - 6 r - 9

Solution steps

(8 r^{2} - 7 r - 9) + (- r^{2} + r)

Simplify

(8 r^{2} - 7 r - 9) + (- r^{2} + r) : 8 r^{2} - 7 r - 9 - r^{2} + r

= 8 r^{2} - 7 r - 9 - r^{2} + r

Group like terms

= 8 r^{2} - r^{2} - 7 r + r - 9

Add similar elements:

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

= 7 r^{2} - 7 r + r - 9

Add similar elements:

- 7 r + r = - 6 r

= 7 r^{2} - 6 r - 9

(m - 4)^{2}

(x^{2} + 1) (x - 1)

x - 4 x

\frac{1}{3} \div \frac{1}{4}

e^{2 l n (t)}

What is (8r^2-7r-9)+(-r^2+r) ?
The solution to (8r^2-7r-9)+(-r^2+r) is 7r^2-6r-9