Solve 15x+3y=9,10x+7y=-4
1 answer:
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Answer:
C>-1/4
Step-by-step explanation:
Two have intersection it must be:
2x+c= x^2+3x, i.e,
x^2+x-c=0
Solution of its equation is:
If we we want two solution we must have that:
1+4c>0
So c>-1/4.