How do you combine like terms in $(5 x^{3} - 7 x) + (7 x^{3} + 5 x)$ $(5x ^ { 3} - 7x ) + ( 7x ^ { 3} + 5x )$ ?

Question

1350 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-22T21:02:42

See the entire solution process below:

First, remove the parenthesis:

$5 x^{3} - 7 x + 7 x^{3} + 5 x$ $5x^3 - 7x + 7x^3 + 5x$

Next, group like terms:

$5 x^{3} + 7 x^{3} - 7 x + 5 x$ $5x^3 + 7x^3 - 7x + 5x$

Now, combine like terms:

$(5 + 7) x^{3} + (- 7 + 5) x$ $(5 + 7)x^3 + (-7 + 5)x$

$12 x^{3} - 2 x$ $12x^3 - 2x$

How do you combine like terms in (5x3−7x)+(7x3+5x)(5x ^ { 3} - 7x ) + ( 7x ^ { 3} + 5x )?