Question

At which root does the graph of $f(x) = (x + 4)^6(x + 7)^5$ cross the x-axis? -7 -4 4 7

          At which root does the graph of $f(x) = (x + 4)^6(x + 7)^5$ cross the x-axis?

-7
-4
4
7

At which root does the graph of f(x) = (x + 4)^6(x + 7)^5 cross the x-axis?

-7
-4
4
7

Added by Heather J.

Elementary and Intermediate Algebra

Alan S. Tussy, R. David Gustafson 5th Edition

Instant Answer

Solved by Expert Maujee Lal

Step 1

Setting f(x) = 0, we have (x + 4)^6(x + 7)^5 = 0. Since a product is equal to zero if and only if at least one of the factors is zero, we can set each factor equal to zero and solve for x. First, setting (x + 4)^6 = 0, we get x + 4 = 0, which gives x = -4. Show more…

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At which root does the graph of f(x) = (x + 4)6(x + 7)5 cross the X-axis? 0 ~7 0 4 0 7

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