hunter3978
05.12.2020 •
Mathematics
What's the slope formula?
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Ответ:
And rise/run on graph
Ответ:
x²+2x-3=0
==>x²+3x-x-3=0
==>x(x+3)-1(x+3)=0
==>(x+3)(x-1)=0
==>x=-3 or x=1
Sol={-3,1}
x²-4x-5=0
==>x²+x-5x-5=0
==>x(x+1)-5(x+1)=0
==>(x+1)(x-5)=0
==>x=-1 or x=5
Sol={-1,5}