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24-09-2016
Mathematics

Answered

What is the solution to the following system of equations?

y = −x2 − 5x − 4

y = −x2 + 9x − 18

A(-1, -10)
B(1, -10)
C(-1, 10)
D(1, 10)

Verified Answer :

24-09-2016

Hello,

y=-x²-5x-4
y=-x²+9x-18
==>-x²-5x-4=-x²+9x-18
==>9x+5x=18-4
==>14x=14
==>x=1 ==>y=-1-5-4=-10 (y=-1+9-18=-10

Answer B

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