Question

help! @mathmate

Answer 1

Which expression is equivalent to 6a + 15?

6(a + 5)
3(2a + 5)
3(3a + 12)
6(a + 12)

Answer 2

You need to factor.
To factor, you separate the coefficients (numbers) and the variables (letters), and factor separately.
For example, to factor 7x+14, which is the same as 7(x)+14(1)
For the coefficients, you would look at 7, 14 to find a common factor of 7.
For the variables, x and 1 have nothing in common, so we'll just leave it.
The factored expression becomes
7(x)+7(2) or 7(x+2).
If you need more examples, see:
http://www.purplemath.com/modules/simpfact.htm

Answer 3

b?

Answer 4

Which expression is equivalent to 6a + 15?

6(a + 5) = \(\sf (6 \times a) + (6 \times 5)\)
3(2a + 5) = \(\sf (3\times 2a) + (3\times 5)\)
3(3a + 12) = \(\sf (3 \times 3a) + (3\times 12)\)
6(a + 12) = \(\sf (6 \times a) + (6 \times 12)\)

Answer 5

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