What is 5x^2+6x-3+4x^2-8x+2 ?

The solution to 5x^2+6x-3+4x^2-8x+2 is 9x^2-2x-1

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simplify 5x^2+6x-3+4x^2-8x+2

simplify

5 x^{2} + 6 x - 3 + 4 x^{2} - 8 x + 2

9 x^{2} - 2 x - 1

Solution steps

5 x^{2} + 6 x - 3 + 4 x^{2} - 8 x + 2

Group like terms

= 5 x^{2} + 4 x^{2} + 6 x - 8 x - 3 + 2

Add similar elements:

5 x^{2} + 4 x^{2} = 9 x^{2}

= 9 x^{2} + 6 x - 8 x - 3 + 2

Add similar elements:

6 x - 8 x = - 2 x

= 9 x^{2} - 2 x - 3 + 2

Add the numbers:

- 3 + 2 = - 1

= 9 x^{2} - 2 x - 1

\frac{79}{8}

15 x^{3} - 12 x^{2} + 6 x

4 x^{2} - 16 x y + 16 y^{2}

x + 2 + 7 x - 3

(3)^{5} (3)^{3}