(-3b + 5x) + (-2b + 3x + 5)

Question

mathstudent55 · Answer

You are adding the polynomials, so the parentheses are unnecessary.
Rewrite the expression with no parentheses.

anonymous · Answer

Combine like terms so -3b + (-2b)= -5b
                                   5x + 2x= 7x
and since '5' has no like term in the other equation it just stays 5 so put the terms together and the final answer should be: -5b + 7x + 5

mathstudent55 · Answer

Then the next step is to combine like terms.

anonymous · Answer

you think you can help me on a quiz

mathstudent55 · Answer

@ChihuahuaAdorer Great job above, but notice the x term in the second polynomial is 3x not 2x.

anonymous · Answer

can u plz help me after??? @mathstudent55

anonymous · Answer

ah yes sorry so the final answer is actually -5b + 8x +5

anonymous · Answer

(9x + 6b) + (-2x - 2b - 1)

anonymous · Answer

Okay so I will help you along on this one but I want you to try to do this. So add like terms.

anonymous · Answer

-11+8b-1

anonymous · Answer

Very close! But there is a negative in front of the the 2x and the 2b so:
9x + (-2x) would be 7x because you have to subtract because the negative is there.
and 6b + (-2b) would equal 4b because you also have to subtract because the negative in front of the two. The final equation would be 7x + 4b - 1

anonymous · Answer

4x3 - 3x) + (-5x3 + 4x - 5)

anonymous · Answer

is it $$4x ^{3} $$ and $$-5x ^{3}$$ ?

anonymous · Answer

both

anonymous · Answer

okay so combine like terms again

anonymous · Answer

-9 6-5

anonymous · Answer

Remember that the negatives on the equation to the left cause you to subtract not add! :)

anonymous · Answer

-9+6x-5

anonymous · Answer

$$(4x ^{3}-3x) + (-5x ^{3} + 4x -5)$$
$$(4x ^{3} + (-5x ^{3})) + (-3x + 4x) -5$$ ^this is where you are combining like terms
$$-1x ^{3} + 1x -5    (or) x ^{3} + x -5$$ ^and after combining the terms your equation should look like this

anonymous · Answer

$$-x ^{3} + x -5$$ is the final answer

anonymous · Answer

7n3 - 9n + 7) + (-8n3 + 6n)

anonymous · Answer

What do you think it is?

anonymous · Answer

idk im going to skip it i want to do the test and its like ten questions

anonymous · Answer

do you understand how to do these type of equations though? if you need anymore help just tag me! :)

anonymous · Answer

@ChihuahuaAdorer  (-4ab+8a-2) - (-4ab-9)

anonymous · Answer

Combine like terms: (-4ab- (-4ab))+(8a-0)+ (-2- (-9))
    (-4ab- (-4ab))= 0        (8a-0)= 8a     (-2-(-9))=7
So 8a+7 should be your final answer