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nyantigehrke nyantigehrke
  • 22-02-2017
  • Mathematics
Answered

what two number multiplied equal 12 but also added together equal -7

Verified Answer :

wolf1728
wolf1728 wolf1728
  • 22-02-2017
Ax * y = 12
B) x + y = -7
A) x = 12 / y
Substitute this into B
B) 12/y + y = -7
multiplying both sides by "y"
12 + y^2 = -7y
y^2 + 7y + 12 = 0
y = -4
and from equation B we calculate x as -3



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