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Find the following expression by multiplying.
(a + b)3

Step-by-step explanation:

If have , we can solve this as:

So, applying distribution with the first two factors and simplifying, we get:

Then, multiplying both expressions and simplifying again, we get:

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

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