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Mekhanik [1.2K]
3 years ago
8

(3a³ - 5b³) + ? a³+ ? b³ =(a³+b³)​

Mathematics
1 answer:
White raven [17]3 years ago
6 0

Answer:

\boxed{-2; 6}

Step-by-step explanation:

Think of this as an ordinary addition problem.

What must you add to 3a³ to get 1a³?   Answer: add -2a³

3 + (-2) = 1

What must you add to -5b³ to get 1b³? Answer: add 6b³

-5  + 6 = 1

Then, the addition looks like this:

\begin{array}{rcr}3a^{3} & + & -5b^{3}\\\boxed{-2}a^{3} & + & \boxed{6}b^{3}\\a^{3} & + & b^{3\\\end{array}

The numbers in the boxes are -2 and 6.

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