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If x - 2 is a factor of x² - bx + b, where b is a constant, what is the value of b ?
(x-2)*(x+a)
x^2+(a-2)x+(-2a)
-a+2=-2a
2=-a -> a=-2
b=4
x^2-4x+4
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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