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what is quadratic function f(x) whose zeroes are -3and -7​

Sagot :

Answer:

f(x) = x² + 10x + 21

Step-by-step explanation:

  • Let the zeroes be r and s respectively
  • r = -3 and; s = -7

Quadratic Functions are always in the form of:

f(x) = ax² + bx + c

  • Since the roots are already given, we can just move backwards.

x = -3

x + 3 = 0

x = -7

x + 7 = 0

(x + 3)(x + 7) = 0

f(x) = x² + 10x + 21

Therefore, the Quadratic Function is :

f(x) = + 10x + 21

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