The expression y2 – 10y + 24 has a factor of y – 4. What is another factor of y2 – 10y + 24?
Answer
A
y – 20
B
y – 14
C
y – 8
D
y – 6
Explanation
Factor the quadratic using the given factor: y² − 10y + 24 = (y − 4)(y − 6). The numbers 4 and 6 multiply to 24 and add to 10, so another factor is y − 6, choice D.
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