Question

Factorie
$x ^{3} + 7x ^{2} - 15$
help please ​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

Let p(x) = x3 – 7x2 – 15x – 9

For checking that (x – 3) is a factor of p(x),

we find : p(3). p(3)

= (3)3 – 7(3) 2 + 15(3) – 9

= 27 – 63 + 45 – 9

= 72 – 72

= 0