Question

help me solve please combining like terms ( -7+4a-a^2)+(-2a+5a^2-10) can you completely work the problem I get confused with the signs. Thank you.

Answer 1

this algebra 2?

Answer 2

prealgebra and beginning

Answer 3

@ChmE

Answer 4

You an start by taking your equation, removing the parenthesis, \[( -7+4a-a^2)+(-2a+5a^2-10) \rightarrow -7+4a-a^2-2a+5a^2-10\]
and putting each of the terms that have the same power of variable together
\[-7+4a-a^2-2a+5a^2-10 \rightarrow -a^2+5a^2-2a+4a-7-10\]
All that is left is to combine them.

Answer 5

remember the only reason you can remove the parenthesis is because you are distributing a +1 and +1 * a=a