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

The solution to (3x^3-7x)+(3x^3+4x) is 6x^3-3x

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

simplify

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

6 x^{3} - 3 x

Solution steps

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

Simplify

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

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

Group like terms

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

Add similar elements:

3 x^{3} + 3 x^{3} = 6 x^{3}

= 6 x^{3} - 7 x + 4 x

Add similar elements:

- 7 x + 4 x = - 3 x

= 6 x^{3} - 3 x

(x + y) (2 x y + y - 2 x - 3)

15 mn - 20 mn + mn

\frac{3 x ^{2}}{3 x ^{2}}

∣ - a ∣

5 (2 x^{2} y + 4 x) + 3 x - 2 x (4 x y - 5) + 12