Question

If (x-4) is a factor of x^2-x-w=0, then the value of w is

Answer 1

Explanation:

If x-4 is factor, then one value of x is 4

4²-4-w=0

12-w=0

w=12

Answer 2

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➷ You have to find a value that, when added to -4, gives -1

This value is +3

The factored form would be (x - 4)(x + 3)

Expand this out:

x^2 + 3x - 4x - 12

==> x^2 -x -12 = 0

w = -12

✽

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