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To form a linear combination of two things, you multiply each by a constant and then...

To form a linear combination of two things, you multiply each by a constant and then add the result together. For example, 2x+3y, -x+4y, ex-πy, 0x+0y are all linear combinations of x and y. -3y is even a linear combination of x and y because 0x-3y=-3y. Which of the following are linear combinations of a and b? Select all that apply.

2a-5b

ab+b

3a

b-a

2a^(2)-3b^(2)

Math   Advanced-Math   
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