What is (-x^2-4x-3)+(x^2+5x+7) ?

The solution to (-x^2-4x-3)+(x^2+5x+7) is x+4

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simplify (-x^2-4x-3)+(x^2+5x+7)

simplify

(- x^{2} - 4 x - 3) + (x^{2} + 5 x + 7)

x + 4

Solution steps

(- x^{2} - 4 x - 3) + (x^{2} + 5 x + 7)

Simplify

(- x^{2} - 4 x - 3) + (x^{2} + 5 x + 7) : - x^{2} - 4 x - 3 + x^{2} + 5 x + 7

= - x^{2} - 4 x - 3 + x^{2} + 5 x + 7

Group like terms

= - x^{2} + x^{2} - 4 x + 5 x - 3 + 7

Add similar elements:

- x^{2} + x^{2} = 0

= - 4 x + 5 x - 3 + 7

Add similar elements:

- 4 x + 5 x = x

= x - 3 + 7

Add the numbers:

- 3 + 7 = 4

= x + 4

6 x 3 - 13 x - 5

- 1 + 0.4 (3 x - 20)

- 5 f - 7 g + f - 5 g - 4 + f

(- x^{2} - 3 x + 3) - (- x^{2} - 9 x + 6)