(b + 2)(b + 2) or (b + 2)2
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b^2 - 7b + 12 = b^2 - 4b - 3b + 12 = b(b -4) -3(b - 4) = (b - 3)(b - 4)
-4b+2 = 18 -4b = 18-2 -4b = 16 b = -4
Do this: write it out 2 |2a + 4b + 8 Now what divides into all the numbers? ---------------- a + 2b + 4 answer is 2(a+2b+4)
(a - b + 2)(a + b + 2)
The expression "b plus b plus b plus b" can be simplified by combining like terms. Since all the terms are the same (b), we can add them together. Adding b four times is the same as multiplying b by 4. Therefore, "b plus b plus b plus b" equals 4b.