Well, isn't that a happy little math question! When you multiply 2b by a, you simply put the two numbers together. So, the result would be 2ab. Just like painting a beautiful landscape, math can be a peaceful and creative experience too.
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b2 x 2b = 2b3
2b + 3 b = 12 . 27 since the beginning is 2 x 12, which equals 24, and then you have to add the extra 3.
The expression 2b x 5b can be simplified by multiplying the coefficients (2 and 5) together to get 10, and then multiplying the variables (b and b) together to get b^2. Therefore, the answer is 10b^2.
-b+5b-2b=2b
This is the same as: 13-2b = 21 -2b = 21-13 -2b = 8 b = -4