for what value of a is (x-5) a factor of 5x^3-7x^2-ax-28
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for what value of a is (x-5) a factor of 5x^3-7x^2-ax-28
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Answer:
zero of the polynomial is 5.
f(5)=5(5)³-7(5)²-a(5)-28
=> 625-175-5a-28=0
422-5a=0
-5a=-422
a= -422/-5
a=422/5
Step-by-step explanation:
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