What is (7-4k^2+k)+(8k+5k^2-7) ?

The solution to (7-4k^2+k)+(8k+5k^2-7) is k^2+9k

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simplify (7-4k^2+k)+(8k+5k^2-7)

simplify

(7 - 4 k^{2} + k) + (8 k + 5 k^{2} - 7)

k^{2} + 9 k

Solution steps

(7 - 4 k^{2} + k) + (8 k + 5 k^{2} - 7)

Simplify

(7 - 4 k^{2} + k) + (8 k + 5 k^{2} - 7) : 7 - 4 k^{2} + k + 8 k + 5 k^{2} - 7

= 7 - 4 k^{2} + k + 8 k + 5 k^{2} - 7

Add similar elements:

k + 8 k = 9 k

= 7 - 4 k^{2} + 9 k + 5 k^{2} - 7

Group like terms

= - 4 k^{2} + 5 k^{2} + 9 k + 7 - 7

Add similar elements:

- 4 k^{2} + 5 k^{2} = k^{2}

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

Subtract the numbers:

7 - 7 = 0

= k^{2} + 9 k

18 x + 8 = 50

- 3 ∣ x + 1 ∣ + 5 \geq - 1

6 = - 3 (4 x + 5) + 9

- 8 x + 44 \geq 60

9 t^{2} - 12 t + 4

What is (7-4k^2+k)+(8k+5k^2-7) ?
The solution to (7-4k^2+k)+(8k+5k^2-7) is k^2+9k