varunram8771 varunram8771
  • 12-05-2018
  • Mathematics
contestada

The equation x2+px−35=0 has one root that is equal to 7. Find the other root and the value of the coefficient p.

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carlosego
carlosego carlosego
  • 22-05-2018
For this case we have the following polynomial:
 x2 + px-35 = 0
 We can factor the polynomial.
 Rewriting we have:
 (x-7) * (x + a) = 0
 The value of a is given by:
 -7 * a = -35
 a = 35/7
 a = 5
 Substituting we have:
 (x-7) * (x + 5) = 0
 Therefore, the value of p is:
 p = -7 + 5
 p = -2
 Answer:
 
the other root is:
 
x = -5
 
The value of the coefficient is:
 
p = -2
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